Social Studies 7 Unit Exam #1

1. What is the Earth's movement around the sun called?

• Tilt
• Spin
• Orbit
• Revolution

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

• 366 days
• 365 days
• 365.25 days
• 364.5 days

What causes the change in seasons?

• The distance from the Earth to the Moon.
• Changes in ocean currents.
• Variations in animal migration patterns.
• The tilt of the Earth's axis and its orbit around the Sun.
• The Earth's orbit is not a perfect circle, at some points it is closer to the sun than other points

What is the angle of the Earth's tilt?

• 23.5 degrees
• 0 degrees

• 66.5 degrees

• 45 degrees
• 90.5 degrees

How does the angle of sunlight affect the seasons?

• The angle of sunlight has no effect on the seasons.
• Seasons are determined solely by the distance from the sun.
• The angle of sunlight only affects temperature, not seasons.
• By changing the intensity and duration of sunlight received in different hemispheres.

The invisible line that passes through the North Pole and the South Pole is called Earth's ____

• axis
• equator
• ecliptic
• prime meridian

The spinning movement of the Earth about its axis is called the Earth's _____

• revolution
• rotation
• precession
• orbit

• A

• B

• C

• D

What are the four points in the Earth's revolution that mark the beginning of each season?

• Summer Solstice, Winter Solstice, Vernal Solstice, Autumnal Equinox

• Vernal Equinox, Summer Solstice, Autumnal Equinox, Winter Solstice
• Spring Equinox, Summer Equinox, Fall Equinox, Winter Equinox
• Vernal Solstice, Autumn Solstice, Summer Equinox, Winter Equinox

On which date does the Northern Hemisphere receive the most direct sunlight and the longest daylight hours?

• March 21st
• September 21st
• June 21st
• December 21st