Unit9: Eclipses

What is responsible for the formation of day and night on Earth?

• The movement of the Sun
• The revolution of the Earth
• The rotation of the Earth
• The tilt of the Earth's axis

How long does it take for the Earth to complete one rotation on its axis?

• 12 hours
• 24 hours
• 30 days
• 365.25 days

Why do different countries have different timings?

• Due to the tilt of the Earth's axis
• Due to the elliptical orbit of the Earth
• Due to the rotation of the Earth
• Due to the movement of the Sun

What is responsible for the change in seasons on Earth?

• The revolution of the Earth around the Moon
• The rotation of the Earth on its axis
• The revolution of the Earth around the Sun
• The tilt of the Earth's axis

What is the natural satellite of the Earth called?

• Mars
• Venus
• Moon
• Jupiter

How long does it take for the Moon to complete one revolution around the Earth?

• 24 hours
• 27.3 days
• 365.25 days
• 29.53 days

Why do we always see the same side of the Moon from Earth?

• Because the Moon does not rotate on its axis
• Because the Moon's rotation period is the same as its revolution period
• Because the Moon is too far away to see its other side
• Because the Sun always shines on the same side of the Moon

What are the variations in the shape of the Moon called?

• Eclipses
• Phases of the Moon
• Lunar cycles
• Celestial movements

How often do the phases of the Moon repeat themselves?

• Every 24 hours
• Every 7 days
• Every 29.53 days
• Every 365.25 days

When does a solar eclipse occur?

• On a new moon day
• On a full moon day
• When the Moon is between the Earth and the Sun
• When the Earth is between the Moon and the Sun