Understanding Earth and Moon Phenomena

What is the degree of Earth’s axial tilt?

• 15°

• 23.5°

• 45°

• 90°

How does Earth’s axial tilt influence the seasons?

• It determines the length of the year

• It changes the distance between Earth and the Sun

• It causes varying sunlight angles at different times of the year

• It has no effect on the seasons

If Earth’s axial tilt were 0°, what would happen to the seasons?

• There would be extreme seasons

• There would only be summer and winter

• There would be no seasons

• The seasons would remain the same

During which season is the Northern Hemisphere tilted toward the Sun?

• Winter

• Fall

• Summer

• Spring

What occurs during the summer solstice in the Northern Hemisphere?

• The longest day of the year

• The shortest day of the year

• Equal day and night

• The Sun is directly over the Equator

When does the winter solstice occur in the Northern Hemisphere?

• June 21

• December 21

• March 21

• September 21

What is the equinox?

• When the day is longer than the night

• When the Earth’s shadow falls on the Moon

• When the Sun is directly over the Equator

• When the Sun is closest to Earth

How many solstices and equinoxes occur in a year?

• None of the above

• Two solstices and two equinoxes

• Four solstices and four equinoxes

• One solstice and one equinox

What causes the phases of the Moon?

• The Moon’s rotation on its axis

• The Moon’s position relative to Earth and the Sun

• Earth’s shadow falling on the Moon

• The Moon’s changing distance from Earth

Which Moon phase occurs when the entire Moon is visible from Earth?

• New Moon

• Old half Moon

• New half Moon

• Full Moon