Movement of Earth in Space

Why do we have leap years?

• To account for the extra 0.25 days in Earth's revolution around the Sun.

• To synchronize the calendar with the lunar phases.

• To ensure that each season starts on the same date every year.

• To compensate for the Earth's axial tilt.

Which phenomenon causes the stars to appear to move across the night sky?

• The Earth's rotation.

• The Moon's orbit around the Earth.

• The movement of the stars themselves.

• The gravitational pull of the Sun.

What is the relationship between the Earth's tilt and the seasons?

• The tilt of the Earth causes different seasons as it orbits the Sun.

• The Earth's tilt has no effect on the seasons.

• The tilt of the Earth only affects the length of days.

• The Earth's tilt causes the Sun to change color during different seasons.

What is the effect of Earth's tilt on daylight hours?

• It causes variations in daylight hours throughout the year.

• It has no effect on daylight hours.

• It increases daylight hours in winter.

• It decreases daylight hours in summer.

When it's summer in the Northern Hemisphere, what season is it in the Southern Hemisphere?

• Winter

• Summer

• Spring

• Autumn

What is the effect of Earth's rotation on the Sun's position in the sky?

• It causes the Sun to appear to move across the sky during the day.

• It causes the Sun to remain stationary in the sky.

• It causes the Sun to rise in the west and set in the east.

• It causes the Sun to change color throughout the day.

Define the term 'orbit'.

• The path an object takes around another object.

• A type of celestial body that orbits a star.

• The gravitational pull exerted by a planet.

• A circular motion of an object in space.

What is the term for the imaginary line that Earth rotates around?

• Equator

• Axis

• Meridian

• Prime Meridian

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

• Approximately 365 days

• Approximately 365.25 days

• Approximately 360 days

• Approximately 366 days

How long does it take for Earth to complete one rotation?

• Approximately 12 hours

• Approximately 24 hours

• Approximately 36 hours

• Approximately 48 hours