Description : When the moon completely covers the sun, it is known as – (1) the Antumbra (2) the Umbra (3) the Penumbra (4) None of these
Last Answer : (2) the Umbra Explanation: A solar eclipse occurs when the moon crosses the path between the sun and the earth. The darkest shadow (where the sun is completely covered) is called the umbra. The ... narrow strip of land or sea over which the umbra passes. The partial shadow is called the penumbra.
Description : The darkest portion of the shadow cast during an eclipse is (1) Corona (2) Umbra (3) Penumbra (4) Black hole
Last Answer : Umbra
Description : When the Earth comes into the umbra and penumbra of the Moon, _____ is formed.
Last Answer : When the Earth comes into the umbra and penumbra of the Moon, _____ is formed. A. lunar ecilpse B. ... C. partial lunar eclipse D. None of the above.
Description : when the Moon comes into the umbra and penumbra of the Earth, _____ is formed.
Last Answer : when the Moon comes into the umbra and penumbra of the Earth, _____ is formed.
Description : The darkest portion of the shadow cast during an eclipse is– (1) Corona (2) Umbra (3) Penumbra (4) Black hole
Last Answer : (2) Umbra Explanation: The umbra (Latin for "shadow") is the innermost and darkest part of a shadow, where the light source is completely blocked by the occluding body. An observer in the umbra experiences a total eclipse.
Description : Umbra and Penumbra
Last Answer : Umbra - area of the shadow of an eclipse, dark center of a sunspot Penumbra - partly lighted area around any shadow
Description : Differentiate between the following pairs. (a) Radiotherapy & Chemotherapy (b) Penumbra & Umbra (c) Springtides & Neaptides (d) Vertebrates &. Invertebrates (e) Fluorescent light & Neon signs
Last Answer : (a) Radiotherapy & Chemotherapy Radiotherapy: Radiation therapy (or radiotherapy) is the medical use of ionizing radiation as part of cancer treatment to control malignant cells. Radiotherapy may be ... Crookes tube), which is a glass tube for demonstrating the principles of electrical discharge.
Description : What is meant by the term “midnight sun” ? (1) Twilight (2) Rising Sun (3) Very bright moon (4) Sun shining in the polar circle for long time
Last Answer : Sun shining in the polar circle for long time
Description : The tides in the sea are primarily due to (1) the atmospheric effect of the Earth (2) the gravitational effect of Venus on the Earth (3) the gravitational effect of the Sun on the Earth (4) the gravitational effect of the Moon on the Earth
Last Answer : the gravitational effect of the Moon on the Earth
Description : Tides in the sea are caused by (1) effect of Sun (2) effect of Moon (3) eombined effect of Moon and Sun (4) gravitational force of Earth and Sun
Last Answer : eombined effect of Moon and Sun
Description : Tides are caused by the gravitational pull of the (1) Earth on the Moon (2) Earth on the Sun (3) Sun and Moon on the Earth (4) Moon on the Earth
Last Answer : Sun and Moon on the Earth
Description : Solar eclipse occurs when (1) the Moon does not lie on the line joining the Sun and the Earth (2) the Moon comes between the Sun and the Earth (3) the Sun comes between the Moon and the Earth (4) the Earth comes between the Moon and the Sun
Last Answer : the Moon comes between the Sun and the Earth
Description : When does the moon come between the Sun and earth? (1) Lunar eclipse (2) Solar eclipse (3) Sidereal day (4) Full moon day
Last Answer : Solar eclipse
Description : When does solar eclipse take place ? (1) When the sun is between the moon and earth (2) When the earth is between the moon and sun (3) When the moon is between the sun and earth (4) When the moon does not lie on the line joining the sun and earth
Last Answer : When the moon is between the sun and earth
Description : Which of the following refers to the white salt which covers the land in some areas during dry season? (1) usar (2) reh (3) erg (4) reg
Last Answer : reh
Description : The largest forest which covers 25 percent of the world’s forest land is : (1) The Tropical Rain forest (2) Taiga forest of Siberia (3) Monsoon forest (4) Temperate forests of Europe
Last Answer : Taiga forest of Siberia
Description : Spring tides occur on (1) New moon day only (2) Full moon day as well as on new moon day (3) Full moon day only (4) The day when the moon’s position is in its first quarter
Last Answer : Full moon day as well as on new moon day
Description : The moon is showing its same face to the earth because (1) It is not rotating about its own axis (2) Its rotation and revolution are opposite (3) Its periods of rotation and revolution are the same (4) Its rotation is faster than its revolution
Last Answer : Its periods of rotation and revolution are the same
Description : Which one of the following planets has no moon? (1) Mars (2) Neptune (3) Mercury (4) Pluto
Last Answer : Mercury
Description : Source of energy in ecosystem is (1) Sun (2) Green plants (3) Sugar produced in photosynthesis (4) ATP
Last Answer : Sun
Description : Airmass near to the earth’s surface is warmer because it (1) radiates heat (2) contains dust particles (3) is warmed by terrestrial radiation (4) is far from the sun
Last Answer : is warmed by terrestrial radiation
Description : Troposphere is the hottest part of the atmosphere because (1) it is closest to the Sun (2) there are charged particles in it (3) it is heated by the Earth’s surface (4) heat is generated in it
Last Answer : it is heated by the Earth’s surface
Description : Storms of gases are visible in the chromosphere of the Sun during (1) Cyclones (2) Anticyclones (3) Lunar eclipse (4) Solar eclipse
Description : What is the position of the Earth when it is at the greatest distance from the sun ? (1) Aphelion (2) Antipode (3) Perihelion (4) Aldiate
Last Answer : Aphelion
Description : Equinox occurs when the sun is vertically above _____ (1) Tropic of Capricorn (2) Tropic of Cancer (3) Poles (4) Equator
Last Answer : Equator
Description : Why is the South Pole colder than the North Pole ? (1) High altitude (2) More rainfall (3) Strong winds (4) Away from the sun
Last Answer : High altitude
Description : The temperature of water at the bottom of a large waterfall is higher than that of the water at the top. because (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater ... of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.
Last Answer : the kinetic energy of the falling water is converted into heat.
Description : When the earth is at the maximum distance from the Sun, it is called (1) Aphelion (2) Perihelion (3) Equinox (4) Sidereal
Description : Suppose if we measure the time lapse between the two Sunsets by sitting in the beach, from this we can estimate (1) The distance between the sun and the earth (2) The depth of the ocean (3) The radius of the earth (4) The radius of the sun
Last Answer : The radius of the earth
Description : Why are winters more severe in Southern Hemisphere than in Northern Hemisphere? (1) Earth is titled towards the sun in the Northern Hemisphere (2) Northern Hemisphere receives more sunlight (3) Because of more iceberg activity in Southern Hemisphere (4) Southern Hemisphere is less inhabited
Last Answer : Earth is titled towards the sun in the Northern Hemisphere
Description : If a star is bigger than Sun, but not more than twice as big, it will turn into a _______. (1) Pulsar (2) Maxima (3) Avenger (4) Discover
Last Answer : Pulsar
Description : When does the sun shine vertically on the Equator ? (1) Throughout the year (2) For six months (3) Twice a year (4) Once a year
Last Answer : Twice a year
Description : The outermost layer of sun is called (1) Lithosphere (2) Chromosphere (3) Photosphere (4) Corona
Last Answer : Corona
Description : Which of the following Scientist proved that the path of each planet around the Sun is elliptical? (1) Kepler (2) Galileo (3) Newton (4) Copernicus
Last Answer : Kepler
Description : The total number of planets revolving around the sun is (1) Five (2) Eight (3) Seven (4) Six
Last Answer : Eight
Description : Light from the Sun reaches us in nearly (1) 8 min (2) 2 min (3) 6 min (4) 4 min
Last Answer : 8 min
Description : The planet that takes 88 days to make one revolution of the sun is : (1) Mercury (2) Saturn (3) Jupiter (4) Mars
Description : The planet nearest to the Sun is : (1) Earth (2) Mercury (3) Mars (4) Venus
Description : The outermost layer of the Sun is called (1) Chromosphere (2) Photosphere (3) Corona (4) Lithosphere
Description : Which is the second nearest star to the Earth after the Sun? (1) Vega (2) Sirius (3) Proxima Centauri (4) Alpha Centauri
Last Answer : Proxima Centaur
Description : The surface temperature of the sun is estimated as (1) 6000 °C (2) 12000 °C (3) 18000 °C (4) 24000 °C
Last Answer : 6000 °C
Description : The light from the Sun reaches the Earth in about— (1) 8 seconds (2) 8 minutes (3) 10 seconds (4) 10 minutes
Last Answer : 8 minutes
Description : Which amidst the following planets has its orbit closest to Sun ? (1) Venus (2) Mars (3) Jupiter (4) Uranus
Last Answer : Venus
Description : The asteroids revolve round the Sun in between : (1) Earth and Mars (2) Mars and Jupiter (3) Jupiter and Saturn (4) Saturn and Uranus
Last Answer : Mars and Jupiter
Description : What do we call it when the Moon completely blocks out the light from the Sun?
Last Answer : A SOLAR ECLIPSE
Description : The sphere of living matter together with water, air and soil on the surface of the earth is known as (1) Lithosphere (2) Biosphere (3) Hydrosphere (4) Atmosphere
Last Answer : Biosphere
Description : Black soil is also known by which of the following name ? (1) Khadar Soil (2) Bangar Soil (3) Alluivial Soil (4) Regur soil
Last Answer : Regur soil
Description : The asha–grey soils of high–latitude coniferous forests a known as : (1) Tundra soils (2) Podsols (3) Grey–Brown soils (4) Red and Yellow soils
Last Answer : Podsols
Description : The soils which are rich in Calcium are known as (1) Pedocals (2) Pedalfers (3) Podsols (4) Laterites
Last Answer : Pedocals
Description : Soil factors are otherwise known as : (1) Edaphic factors (2) Biotic factors (3) Physiographic factors (4) Climatic factors
Last Answer : Edaphic factors