In which part of earths core do convection currents occur?

In which part of earths core do convection currents occur?
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How does the sun drive convection currents in the ocean and in the atmosphere?

Description : How does the sun drive convection currents in the ocean and in the atmosphere?

Last Answer : By heating some places more than others.

The difference in air temperature over land compared to over water causes convection currents in the atmosphere. How would a person at the beach experience these convection currents?

Description : The difference in air temperature over land compared to over water causes convection currents in the atmosphere. How would a person at the beach experience these convection currents?

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The twinkling of stars can be partly attributed to (a) intermittent shining (b) convection currents in the atmosphere (c) atmospheric refraction (d) the unstable motion of the earth

Description : The twinkling of stars can be partly attributed to (a) intermittent shining (b) convection currents in the atmosphere (c) atmospheric refraction (d) the unstable motion of the earth

Last Answer : Ans:(c)

One feels cold after a dip in sea water due to (a) convection currents (b) the deposition of salt on the body (c) the evaporation of water on the body (d) the difference in temperatures between land and sea

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During summer, we feel comfortable under a fan because it (a) throws cool air on us (b) sets the air in motion, thereby increasing the evaporation of sweat (c) produces convection currents (d) produces air which carries heat away from the body

Description : During summer, we feel comfortable under a fan because it (a) throws cool air on us (b) sets the air in motion, thereby increasing the evaporation of sweat (c) produces convection currents (d) produces air which carries heat away from the body

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The freezer in a refrigerator is fitted near the top (a) to keep it away from the hot compressor which is near the bottom (b) because of convenience (c) so that it can cool the whole interior by setting up convection currents (d) without any specific purpose

Description : The freezer in a refrigerator is fitted near the top (a) to keep it away from the hot compressor which is near the bottom (b) because of convenience (c) so that it can cool the whole interior by setting up convection currents (d) without any specific purpose

Last Answer : Ans:(c)

The freezer in a refrigerator is fitted near the top – (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Description : The freezer in a refrigerator is fitted near the top – (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Last Answer : (3) it facilitates convection currents Explanation: The freezer in a refrigerator is fitted near the top so that it can cool the whole interior by setting up ... compartment temperature excessively causes difficulties in maintaining above-reezing temperature in the refrigerator compartment.

Ocean currents are an example of – (1) convection (2) conduction (3) insulation (4) radiation

Description : Ocean currents are an example of – (1) convection (2) conduction (3) insulation (4) radiation

Last Answer : (1) convection Explanation: Heat is transferred by convection in numerous examples of naturally occurring fluid flow, such as: wind, oceanic currents, and movements within the Earth's atmosphere. ... transfer heat from the surplus to deficit heat zones and set the oceanic circulation in motion.

____ heating means that the circulation of currents in one region inside a can distributes the heat to another. a. Conduction c. Convection b. Radiation d. Slow

Description : ____ heating means that the circulation of currents in one region inside a can distributes the heat to another. a. Conduction c. Convection b. Radiation d. Slow

Last Answer : c. Convection

The freezer in a refrigerator is fitted near the top (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Description : The freezer in a refrigerator is fitted near the top (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Last Answer : it facilitates convection currents

Ocean currents are an example of (1) convection (2) conduction (3) insulation (4) radiation

Description : Ocean currents are an example of (1) convection (2) conduction (3) insulation (4) radiation

Last Answer : convection

How do convection cells in earth's atmosphere cause high-and low- pressure belts?

Description : How do convection cells in earth's atmosphere cause high-and low- pressure belts?

Last Answer : The convection cells radiate heat.

What causes convection in earths mantle?

Description : What causes convection in earths mantle?

Last Answer : the cycle of heating, cooling, rising, and sinnking

How do convection cells in earth's atmosphere cause high-and low- pressure belts?

Description : How do convection cells in earth's atmosphere cause high-and low- pressure belts?

Last Answer : The convection cells radiate heat.

Even after sunset, the air near the Earth's surface continue to receive heat due to – (1) Insolation (2) Terrestrial Radiation (3) Conduction (4) Convection

Description : Even after sunset, the air near the Earth's surface continue to receive heat due to – (1) Insolation (2) Terrestrial Radiation (3) Conduction (4) Convection

Last Answer : (2) Terrestrial Radiation Explanation: Even after the sunset when the sun goes down, the incoming radiation from the sun stops, but there is still a lot of radiation that has been absorbed ... i.e. terrestrial radiation heats up the atmosphere more than the incoming solar radiation i.e. insolation

The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating -----------? A. Conduction of heat upward from a hot surface B. Convection from a hot surface C. Absorption of infrared energy that has been radiated from the surface D. Heat energy from the earth’s interior (Answer)

Description : The atmosphere near the earth's surface is heated from below. Which of the following does not significantly contribute to this heating -----------? A. Conduction of heat upward from a ... infrared energy that has been radiated from the surface D. Heat energy from the earth's interior (Answer)

Last Answer : D. Heat energy from the earth’s interior (Answer)

Even after sunset, the air near the Earth’s surface continue to receive heat due to (1) Insolation (2) Terrestrial Radiation (3) Conduction (4) Convection

Description : Even after sunset, the air near the Earth’s surface continue to receive heat due to (1) Insolation (2) Terrestrial Radiation (3) Conduction (4) Convection

Last Answer : Terrestrial Radiation

The harmonic currents in a power transformer does not cause increase in: a) Secondary voltage b) Core loss c) Copper loss d) Magnetic interference with protective relays

Description : The harmonic currents in a power transformer does not cause increase in: a) Secondary voltage b) Core loss c) Copper loss d) Magnetic interference with protective relays

Last Answer : Ans: A

Brush sparking during commutation may be caused by ________. A. eddy currents in the armature core B. laminations in the generator field pieces C. induced current opposite to coil inductance D. coil inductance discharge occurring at commutation

Description : Brush sparking during commutation may be caused by ________. A. eddy currents in the armature core B. laminations in the generator field pieces C. induced current opposite to coil inductance D. coil inductance discharge occurring at commutation

Last Answer : Answer: D

What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field and a magnetic field at right angles to each other D. A wave consisting of two magnetic fields at right angles to each other

Description : What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field ... to each other D. A wave consisting of two magnetic fields at right angles to each other

Last Answer : C. A wave consisting of an electric field and a magnetic field at right angles to each other

What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each other. C. Alternating currents in the core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Description : What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each ... core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Last Answer : B. A wave consisting of an electric field and a magnetic field at right angles to each other.

The currents of the Earth's oceans are caused by?

Description : The currents of the Earth's oceans are caused by?

Last Answer : Ocean currents can be caused by wind ,density differences in water masses caused by temperature and sanility variations ,gravity ,and events such as earthquakes or storms.

How The solar wind can interact with Earths magnetic field to create powerful electrical currents that cause what near the poles?

Description : How The solar wind can interact with Earths magnetic field to create powerful electrical currents that cause what near the poles?

Last Answer : Need answer

What effects of the earths rotation on the direction of winds and currents is called what?

Description : What effects of the earths rotation on the direction of winds and currents is called what?

Last Answer : It's called the 'coriolis' effect.

Land and sea-breezes occur due to : (1) Conduction (2) Convection (3) Radiation (4) Tides

Description : Land and sea-breezes occur due to : (1) Conduction (2) Convection (3) Radiation (4) Tides

Last Answer : (2) Convection Explanation: During the day, the sun warming the land also warms the air. Since land heats up quicker than water does, the air over land gets warmer than the air over the water. ... Breeze. Reversely, at night the land cools down faster than the water does, and creates a Land Breeze.

Pick out the wrong statement. (A) In process heat exchangers, saturated steam is preferred over the superheated steam (B) The maximum is the emissive power of a surface at a temperature T1 occurs at a wavelength of λ1 . If the surface temperature is halved, the maximum in the emissive power would occur at a wavelength of 0.5 λ1 (C) When a vertical plate is heated in infinite air environmental under natural convection conditions, the velocity profile in air, normal to the plate, exhibits a maximum

Description : Pick out the wrong statement. (A) In process heat exchangers, saturated steam is preferred over the superheated steam (B) The maximum is the emissive power of a surface at a temperature T1 ... under natural convection conditions, the velocity profile in air, normal to the plate, exhibits a maximum

Last Answer : (B) The maximum is the emissive power of a surface at a temperature T1 occurs at a wavelength of λ1 . If the surface temperature is halved, the maximum in the emissive power would occur at a wavelength of 0.5 λ1

reduction in thermal resistance during heat transfer does not occur in the (A) Convection heat transfer by stirring the fluid and cleaning the heating surface (B) Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity (C) Radiation heat transfer by increasing the temperature and reducing the emissivity (D) None of these

Description : reduction in thermal resistance during heat transfer does not occur in the (A) Convection heat transfer by stirring the fluid and cleaning the heating surface (B) Conduction heat transfer by ... Radiation heat transfer by increasing the temperature and reducing the emissivity (D) None of these

Last Answer : Option C

Land and sea-breezes occur due to : (1) Conduction (2) Convection (3) Radiation (4) Tides

Description : Land and sea-breezes occur due to : (1) Conduction (2) Convection (3) Radiation (4) Tides

Last Answer : Convection

Fishing grounds of the world are found in areas where - (1) there are high tides (2) warm and cold currents meet (3) there are low tides (4) high stormy waves occur

Description : Fishing grounds of the world are found in areas where - (1) there are high tides (2) warm and cold currents meet (3) there are low tides (4) high stormy waves occur

Last Answer : (2) warm and cold currents meet Explanation: he major fishing grounds of the world are found in those regions where the warm oceanic currents meet the cold currents. The mixing of these waters and ... the ocean bottom lifts nutrients to the surface. They are rich in planktons on which fish feed.

Extensive deserts occur in the western tropical regions of continents because : (1) of easterly trade winds. (2) cold ocean currents flow along the western coasts. (3) of the effect of both the off-shore easterly trade winds and cold ocean currents. (4) the rate of evaporation is greater along the western margin areas.

Description : Extensive deserts occur in the western tropical regions of continents because : (1) of easterly trade winds. (2) cold ocean currents flow along the western coasts. (3) of the effect of both the ... winds and cold ocean currents. (4) the rate of evaporation is greater along the western margin areas.

Last Answer : (3) of the effect of both the off-shore easterly trade winds and cold ocean currents. Explanation: Extensive deserts occur in the western tropical regions of continents because of the effect of ... is found near the tropics of Cancer and Capricorn, usually toward the western side of the continents

Which one of the following ocean currents does not occur in Atlantic Ocean? (1) Gulf stream (2) Brazil current (3) Peru current (4) Canary current

Description : Which one of the following ocean currents does not occur in Atlantic Ocean? (1) Gulf stream (2) Brazil current (3) Peru current (4) Canary current

Last Answer : (3) Peru current Explanation: The Humboldt Current , also known as the Peru Current, is a cold, lowsalinity ocean current that flows north-westward along the west coast of South America from ... boundary current flowing in the direction of the equator, and can extend 1,000 kilometers offshore.

Which of the following problems will occur if the circuit breaker of the incoming alternator is closed and it is 180° out of phase with the loaded alternator when paralleling? A. The rotor of the loaded alternator will hunt. B. Severe cross currents will occur which could cause damage. C. The rotor of the incoming alternator will stop. D. Both alternators will parallel 180° out of phase.

Description : Which of the following problems will occur if the circuit breaker of the incoming alternator is closed and it is 180° out of phase with the loaded alternator when paralleling? A. The rotor of the ... The rotor of the incoming alternator will stop. D. Both alternators will parallel 180° out of phase.

Last Answer : Answer: B

Fishing grounds of the world are found in areas where (1) there are high tides (2) warm and cold currents meet (3) there are low tides (4) high stormy waves occur

Description : Fishing grounds of the world are found in areas where (1) there are high tides (2) warm and cold currents meet (3) there are low tides (4) high stormy waves occur

Last Answer : warm and cold currents meet

Which one of the following ocean currents does not occur in Atlantic Ocean ? (1) Gulf stream (2) Brazil current (3) Peru current (4) Canary current

Description : Which one of the following ocean currents does not occur in Atlantic Ocean ? (1) Gulf stream (2) Brazil current (3) Peru current (4) Canary current

Last Answer : Peru current

Extensive deserts occur in the western tropical regions of continents because : (1) of easterly trade winds. (2) cold ocean currents flow along the western coasts. (3) of the effect of both the offshore easterly trade winds and cold ocean currents. (4) the rate of evaporation is greater along the western margin areas.

Description : Extensive deserts occur in the western tropical regions of continents because : (1) of easterly trade winds. (2) cold ocean currents flow along the western coasts. (3) of the effect of both the ... winds and cold ocean currents. (4) the rate of evaporation is greater along the western margin areas.

Last Answer :  of the effect of both the offshore easterly trade winds and cold ocean currents. 

What will happen when the earth's core cools?

Description : What will happen when the earth's core cools?

Last Answer : It’ll be a few billion years before this happens so I’ll keep my concern at a minimum… (thinks about how the recession is affecting her finances again)

Why does the Earth's core have such a high temperature

Description : I heard that the Earth's core has a temperature of 6000 degrees Celsius. Is it even possible? And it hasn't cooled in those hundreds of thousands of years?

Last Answer : I recommend studying something about it here, for example here http://www.national-geographic.cz/clanky/zemske-jadro-je-mnohem-zhavejsi-nez-vedci-odhadovali.html#.VfJSLuQVjIU

What is the Earth's core?

Description : Is it hot lava?

Last Answer : Hmmm ... No - it's not .. Yes - it's ...: o According to theories - I wasn't there ... If you imagine "lava" as a magma eruption on the earth's surface - then no. If as "something" very hot, then yes. It is a mixture of many "hot" elements (and a few compounds) under high pressure.

how hot is the earths outer core?

Description : how hot is the earths outer core?

Last Answer : Need Answer

What percentage of the earths outer core is iron?

Description : What percentage of the earths outer core is iron?

Last Answer : We do not know exactly because there is no way to get to it itfind out. We know the outer core composed mainly of a nickel-ironalloy.We believe that the composition of Iron meteorites must ... these rangesfrom 5% to 62% nickel from meteorite to meteorite with an averageof 5% nickel leaving 95% Iron.

Are all tectonic plates located at earth's core?

Description : Are all tectonic plates located at earth's core?

Last Answer : No tectonic plates are in or even near the earth's core!The tectonic plates are fragments of the earth's crust.At subduction zones the edge of the subducting tectonic platedescends as much as a few hundred miles down into the earth'smantle before melting and becoming part of the mantle.

Is it true Scientist have concluded that earths inner core is made of solid iron?

Description : Is it true Scientist have concluded that earths inner core is made of solid iron?

Last Answer : Easily Contact Facebook Customer Service-Well the quickest and direct way to contact Facebook is to use the phone that's not a heavy weight process. To avail the Facebook Customer Service, all you would ... at any time and solve your issue instantly. Recover a hack facebook account 1 844-827-1201

How scientists study earth's core?

Description : How scientists study earth's core?

Last Answer : What is the answer ?

What is earths outer core inferred to be?

Description : What is earths outer core inferred to be?

Last Answer : What is the answer ?

Is the earth's outer core under low pressure?

Description : Is the earth's outer core under low pressure?

Last Answer : What is the answer ?

What are the inferred pressure and temperature at the boundary of the earths stiffer mantle and outer core?

Description : What are the inferred pressure and temperature at the boundary of the earths stiffer mantle and outer core?

Last Answer : What is the answer ?

Is it true Scientist have concluded that earths inner core is made of solid iron?

Description : Is it true Scientist have concluded that earths inner core is made of solid iron?

Last Answer : Easily Contact Facebook Customer Service-Well the quickest and direct way to contact Facebook is to use the phone that's not a heavy weight process. To avail the Facebook Customer Service, all you would ... at any time and solve your issue instantly. Recover a hack facebook account 1 844-827-1201

How does Earth's core transmit heat?

Description : How does Earth's core transmit heat?

Last Answer : By conduction and convection.

Why is the Earth's core hot? What caused it to heat up? Is it still heating, or now cooling?

Description : Why is the Earth's core hot? What caused it to heat up? Is it still heating, or now cooling?

Last Answer : Scientists estimate that temperature at the Earth's core is about 5538{+0}C. Much of the heat inside the Earth today comes from elements that were present when the planet was first formed billions of years ... function of their half-life. Therefore, Earth's core is not heating up, it's cooling down.