Description : We always see the same lace of the moon, because - (1) It is smaller than the earth (2) It revolves on its axis in a direction opposite to that of the earth (3) It takes equal time for revolution ... the earth and rotation on its own axis (4) It rotates at the same speed as the earth around the sun
Last Answer : (3) It takes equal time for revolution around the earth and rotation on its own axis Explanation: It is tidal locking that causes the synchronous rotation which causes the Moon to present "just one side ... to revolve (orbit) around the Earth. So it maintains a "constant face" in our direction.
Description : We always see the same face of the moon, because (1) it is smaller than the earth (2) it revolves on its axis in a direction opposite to that of the earth (3) it takes equal time for revolution around the earth and rotation on its own axis (4) it rotates at the same speed as the earth around the sun
Last Answer : it takes equal time for revolution around the earth and rotation on its own axis
Description : Constellations appear to change their positions at different times of night because (a) the earth revolves round the sun (b) the earth rotates about its axis (c) the constellations move faster than the earth (d) the earth and the constellations move in opposite directions
Last Answer : Ans:(b)
Description : The earth’s movement around the sun is called the ………………. of the earth. (a) revolution (b) rotation (c) motion
Last Answer : (a) revolution
Description : Stars appears to move from east to west because - (1) all stars move from east to west (2) the earth rotates from west to east (3) the earth rotates from east to west (4) the background of the stars moves from west to east
Last Answer : (2) the earth rotates from west to east Explanation: Earth's spin (or rotation) on its axis. Earth rotates or spins toward the east, and that's why the Sun, Moon, planets, and stars all rise in the east and make their way westward across the sky.
Last Answer : (2) the earth rotates from west to east Explanation: Earth’s spin (or rotation) on its axis. Earth rotates or spins toward the east, and that’s why the Sun, Moon, planets, and stars all rise in the east and make their way westward across the sky.
Description : Which of the following statement is false? a.The potential energy of a particle has the form Ep = k2x. The force acting on the particle is constant (k is a constant) b.The linear velocity of ... zag path while ascending a steep hill e.The density of milk decreases when cream is taken out of milk
Last Answer : e. The density of milk decreases when cream is taken out of milk
Description : The term ‘equinox’ means – (1) The path which the Earth takes around the Sun (2) The axis of the Earth around which it rotates (3) When the day and night are of equal duration (4) The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon
Last Answer : (3) When the day and night are of equal duration Explanation: The name "equinox" is derived from the Latin aequus (equal) and nox (night), because around the equinox, the night and day have ... The term equinox can also be used in a broader sense, meaning the date when such a passage happens.
Description : The term ‘equinox’ means (1) The path which the Earth takes around the Sun (2) The axis of the Earth around which it rotates (3) When the day and night are of equal duration (4) The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon
Last Answer : When the day and night are of equal duration
Description : Which of these events gives us evidence that the earth is spherical? w) a volcanic eruption x) an earthquake y) an eclipse of the moon z) the earth's rotation
Last Answer : ANSWER: Y -- AN ECLIPSE OF THE MOON
Description : A solar eclipse occurs when (a) the moon comes between the sun and the earth (b) the earth comes between the sun and the moon (c) the sun comes between the earth and the moon (d) the sun, the moon and the earth are not in the same line
Last Answer : Ans:(a)
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 : (2) the Moon comes between the Sun and the Earth Explanation: A solar eclipse is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks ("occults") the Sun. This can happen only at new moon, when the Sun and the Moon are in conjunction.
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 : (3) When the moon is between the sun and earth Explanation: A solar eclipse occurs when the moon gets between Earth and the sun, and the moon casts a shadow over Earth. A solar eclipse can ... moon, when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface.
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 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 : In how much time Earth rotates around its axis:
Last Answer : A Day
Description : The Earth rotates-around an axis pointing towards which side? -Do You Know?
Last Answer : answer:
Description : The Earth rotates-around an axis pointing towards which side?
Last Answer : The pole star
Description : It is dangerous to observe solar eclipse with naked eyes because – (1) Infrared radiations from sun burn our retina (2) Ultraviolet radiations from Sun burn our retina (3) All radiations from sun initiate chemical reactions in eyes (4) Cosmic rays reach eyes more during the eclipse
Last Answer : (2) Ultraviolet radiations from Sun burn our retina Explanation: The solar radiation that reaches the surface of Earth ranges from ultraviolet (UV) radiation at wavelengths longer than 290 nm to radio ... of the Sun during an eclipse is for the development of "eclipse blindness" or retinal burns.
Description : It is dangerous to observe Solar eclipse with naked eyes because (1) Infrared radiations from sun burn our retina (2) Ultraviolet radiations from Sun burn our retina (3) All radiations from sun initiate chemical reactions in eyes (4) Cosmic rays reach eyes more during the eclipse
Last Answer : Ultraviolet radiations from Sun burn our retina
Description : Equator represents – (1) line joining North and South poles (2) imaginary line passing round the Earth midway between North & South poles (3) a belt (ring) around the planet Saturn (4) axis of rotation of Earth
Last Answer : (2) imaginary line passing round the Earth midway between North & South poles Explanation: An equator is the intersection of a sphere's surface with the plane perpendicular to the sphere ... astronomical bodies have equators similarly defined. The length of the Equator is roughly 40,075 kilometres.
Description : Equator represents (1) line joining North and South poles (2) imaginary line passing round the Earth midway between North & South poles (3) a belt (ring) around the planet Saturn (4) axis of rotation of Earth
Last Answer : imaginary line passing round the Earth midway between North & South poles
Description : Solar eclipse occurs when (a) Earth comes between sun and moon (b) Moon is at right angle to the earth (c) Moon comes between sun and earth (d) Sun comes between moon and earth
Last Answer : Ans:(c)
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 : (2) Solar eclipse Explanation: As seen from the Earth, a solar eclipse occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks the Sun. This can happen only ... is fully obscured by the Moon. In partial and annular eclipses only part of the Sun is obscured.
Description : The solar eclipse occurs when (1) the sun comes in between the moon and the earth (2) the earth comes in the between the sun and the moon (3) the moon comes in between the sun and the earth (4) None of these
Last Answer : (3) the moon comes in between the sun and the earth
Last Answer : Solar eclipse
Description : How does earths rotation around the sun cause seasons?
Last Answer : It is not the rotation round the Sun that causes the seasons.It is the tilting of the World on its axis that creates the seasons. For instance, when the northern hemisphere tilts towards the ... in the southern hemisphere.So while Britain is in Winter in December, Australia is enjoying their Summer.
Description : A man is standing near the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platform will decrease if he a.extends his arms outwards b.moves ... heavy bag from one of his friends standing near by and holds it in his hand e.107 dynes
Last Answer : d. accepts a heavy bag from one of his friends standing near by and holds it in his hand
Description : A man is standing ner the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platorm will decrease if he a.extends his arms outwards b.107 ... towards the axis of rotation d.jumps out from that platform e.take out his coat and throws away
Last Answer : a. extends his arms outwards
Description : Which part of the sun is visible during total solar eclipse? (a) No part (b) Corona (c) Chromosphere (d) Photosphere
Description : Which gas was discovered on the sun about 151 years ago during total solar eclipse? A. Hydrogen B. Helium (Answer) C. Nitrogen D. Flourine
Last Answer : B. Helium (Answer)
Description : Is it safe to take a selfie during a solar eclipse with the sun behind you and included in the picture?
Last Answer : It would only pose a threat to your equipment. I have my doubts it would show up on any phone camera.
Description : Storms of gases are visible in the chromosphere of the Sun during – (1) Cyclones (2) Anticyclones (3) Lunar eclipse (4) Solar eclipse
Last Answer : (4) Solar eclipse Explanation: As seen from the Earth, a solar eclipse occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks the Sun. This can happen only ... obscured. The moon blocks out the bulk of the sun allowing us to see the chromosphere and corona.
Description : Storms of gases are visible in the chromosphere of the Sun during (1) Cyclones (2) Anticyclones (3) Lunar eclipse (4) Solar eclipse
Description : The sun rises in Arunachal Pradesh two hours before it does in Dwaraka in Gujarat. This is because the former is (a) higher in elevation than Dwaraka (b) situated further north than Dwaraka (c) situated ... than Dwaraka (d) situated about 30 º east of Dwaraka and the earth rotates from west to east
Last Answer : Ans: (d)
Description : When a body moves round a fixed axis it will have a.A motion of rotation and translation b.A circular motion c.A rotary motion d.A translatory motion e.A swinging motion
Last Answer : b. A circular motion
Description : In a solar or lunar eclipse, the region of earth's shadow is divided into – (1) Five parts (2) Four parts (3) Two parts (4) Three parts
Last Answer : (4) Three parts Explanation: An eclipse occurs when a star (such as Sun) aligns with two celestial bodies, such as a planet and a moon. The closer body casts a shadow that intersects the more ... a solar eclipse, for example, the moon appears smaller than the sun, resulting in an annular eclipse.
Description : In a solar or lunar eclipse, the region of earth’s shadow is divided into (1) Five parts (2) Four parts (3) Two parts (4) Three parts
Last Answer : Three parts
Description : How do the tilt of Earths axis and Earths movement’s around the sun cause seasons?
Last Answer : Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the northern hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.
Description : A student focuses the image of a candle flame, placed at about 2 m from a convex lens of focal length 10 cm, on a screen. After that he moves gradually the flame towards the lens and each time focuses its ... d) What is seen on the screen when the flame is very close (at about 5 cm) to the lens?
Last Answer : (a) The student moves the lens away from the screen to focus the image because on moving the candle towards the lens, the image distance increases. (b)The size of the image increases when the object ... on the screen. A virtual image is formed behind the candle on the same side of the screen.
Description : The Earth takes about _________ to complete one rotation around its axis. A. 48 hours B. One month C. 24 hours D. 365 days
Last Answer : ANSWER: C
Description : The Earth takes about _________ to complete one rotation around its axis. A. 48 hours B. One month C. 24 hours D. 365 days 27
Description : The star (other than the sun) nearest to the earth is (a) Proxima Centauri (b) Alpha Centauri (c) Pole star (d) Vega
Description : If the Earth rotates on its own axis at a speed of 30 kilometers per second, then why does the Earth look fixed from space ?
Last Answer : Earth in its own orbit 29.8km / sec. Keeps moving fast. But when viewed from space, the earth looks fixed. The reason is 29.8km / sec. The speed seems too much to us but it is negligible to the ... earth is 12,667km. . So even if the earth rotates at that speed, it seems to be apparent from space.
Description : The earth rotates on its axis from?
Last Answer : West to east
Description : The Earth rotates on its axis at an inclination of
Last Answer : The Earth rotates on its axis at an inclination of