Earth & Universe Quiz

Which of the following is NOT a characteristic of the Sun? A) It is a star. B) It produces its own light and heat. C) It is the centre of the Milky Way. D) It is made mostly of hydrogen and helium.

1. A only
2. B & D
3. C only
4. C & D

Answer: (c) C only

Fill in the blank: If a new telescope allowed scientists to see small rocky planets beyond Neptune, what would they be classified as _____________.

1. gas giants
2. terrestrial planets
3. dwarf planets
4. asteroids

Answer: (c) dwarf planets

Jack was astonished to know that a day on Mercury last longer than a year on Mercury. Help him find out the reason for the same.

1. Mercury spins on its axis very slowly compared to how fast it orbits the Sun.
2. Mercury is too close to the Sun, causing time to slow down.
3. The Sun’s gravity prevents Mercury from spinning.
4. Mercury’s size makes it difficult to rotate.

Answer: (a) Mercury spins on its axis very slowly compared to how fast it orbits the Sun.

Fill in the blanks: During a ____ eclipse, the Moon comes between the Earth and the Sun, casting a ____ on Earth. This results in a ____ eclipse if the Moon completely blocks the Sun.

1. lunar, shadow, total
2. solar, shadow, total
3. solar, glow, annular
4. lunar, shadow, partial

Answer: (b) solar, shadow, total

A scientist observes a celestial body that does not emit its own light but reflects sunlight, has a rocky surface, and orbits a planet. What is the most accurate classification of this object?

1. A planet
2. A comet
3. An asteroid
4. A natural satellite

Answer: (d) A natural satellite

Read the statement and the reason and choose the correct option: Statement: The Moon has extreme temperatures, with very hot days and freezing nights. Reason: The Moon has no atmosphere to regulate temperature.

1. The statement is correct, but the reason is incorrect.
2. The statement is incorrect, but the reason is correct.
3. Both the statement and the reason are correct, but the reason does not explain the statement.
4. Both the statement and the reason are correct, and the reason correctly explains the statement.

Answer: (d) Both the statement and the reason are correct, and the reason correctly explains the statement.

If scientists wanted to explore a planet with extreme heat, slow rotation and thick clouds, which planet should they study?

1. Mars
2. Venus
3. Jupiter
4. Neptune

Answer: (b) Venus

During a total lunar eclipse, why does the Moon appear red instead of completely disappearing?

1. The Moon produces its own light during an eclipse.
2. Sunlight bends around Earth, and only red light reaches the Moon.
3. The Moon moves closer to the Sun and absorbs its heat.
4. The Moon is covered by a thin layer of Martian dust that turns it red.

Answer: (b) Sunlight bends around Earth, and only red light reaches the Moon.

NASA scientists want to study the Sun’s outer atmosphere in detail. When is the best time to observe it?

1. During a total solar eclipse
2. During a new moon
3. During a full moon
4. At night when the sky is dark

Answer: (a) During a total solar eclipse

A student in Australia sees a waxing crescent Moon in the sky. At the same time, a student in North America looks at the Moon. What will the student in North America most likely see?

1. A waxing crescent, but flipped upside down compared to what the Australian student sees.
2. A waning crescent, as different hemispheres see different phases.
3. A full Moon, since the Moon looks different in the Northern Hemisphere.
4. No Moon, as the Moon is only visible in one part of the world at a time.

Answer: (a) A waxing crescent, but flipped upside down compared to what the Australian student sees.