Class 6 – Our Universe: 20 MCQs

We always see the same side of the Moon because:

• The Moon does not rotate

• The Moon rotates faster than Earth

• The Moon’s rotation period equals its revolution period

• The Moon has no axis

If Earth stopped rotating but continued revolving, what would happen?

• No seasons

• No year

• No day and night

• No Moon

Which statement best explains why stars twinkle but planets do not?

• Stars are smaller

• Planets are closer to Earth

• Stars emit more light

• Planets move faster

The Pole Star appears almost fixed in the sky because:

• It does not rotate

• It lies on Earth’s axis

• It is directly above the North Pole

• It is the brightest star

Which of the following is an asterism and NOT a full constellation?

• Orion

• Taurus

• Big Dipper

• Canis Major

The Milky Way looks like a white band in the sky because:

• It is made of clouds

• Its stars are very close

• Light from many distant stars merges together

• It reflects sunlight

Why is life possible on Earth but not on Mercury?

• Mercury has no gravity

• Mercury is too far from the Sun

• Mercury lacks atmosphere and liquid water

• Mercury has moons

Which factor mainly causes light pollution?

• Moonlight

• Sunlight

• Artificial city lights

• Star clusters

Which event would MOST help astronomers observe faint stars?

• Full moon night

• Cloudy night

• Dark sky reserve

• Sunrise

Which correctly matches the object with its description?

• Asteroid – icy body with tail

• Comet – rocky body in asteroid belt

• Meteor – burning meteoroid in atmosphere

• Meteorite – light streak in sky