Unit 2 Review

Unit 2 Review

Seasons

We learned that the Earth's rotation on its axis causes day and night. The Earth is tilted 23 degrees. The Earth's orbit around the sun as it is tilted on its axis causes seasons.

Multiple Choice

How often does the Earth orbit the sun?

• Every 365.25 days

• Once a month

• No one actually knows

Multiple Choice

Why does the Earth experience seasons?

• The sun rotates on its axis

• The moon rotates around the earth

• The Earth is tilted as it orbits the sun.

The Earth's tilt causes part of the planet to be pointing toward the sun, while the bottom part is pointing away from the sun.

This makes the Northern Hemisphere and Southern Hemisphere have opposite seasons.

Multiple Choice

Which statement is NOT true?

• The Northern and Southern Hemispheres always face the same way.

• When it is Summer in the Northern Hemisphere that part of the Earth is pointing toward the sun.

• The line that divides the North and South poles is called the equator.

Multiple Choice

Rotation is the Earth _______ on its axis. Revolution is the Earth ______ around the sun.

• spinning, orbiting

• orbiting, spinning

The sun gets higher in the sky during summer, which is why it is warmer.

Notice the length of the shadows during each season.

Multiple Choice

During which season is shadows the longest (giving indirect heat)?

• Summer

• Fall/Spring

• Winter

Multiple Choice

Which statements are true?

• Summer has the most daylight hours

• Spring/Fall have equal amounts of day and night time

• Winter has the shortest amount of daylight hours

• All of the above are true

The Moon

The moon spins on its axis and orbits the Earth like the Earth does with the sun.

Multiple Choice

What does the moon's orbit around Earth cause?

• Seasons

• Moon Phases

• Day and Night

Multiple Choice

How often does the moon orbit the Earth?

• Every 28 days

• Once a year

• Every 6 months

Eclipses

Eclipses happen when one object passes in the shadow of another object. The eclipses can be partial or total, depending on where the object is in the shadow.

Multiple Select

What are the two (2) types of eclipses?

• Solar

• Moon

• Lunar

• Sun

Multiple Choice

A solar eclipse happens when...

• The moon blocks our view of the sun, casting a shadow on the Earth.

• The sun passes in the shadow of the moon.

• The Earth revolves around the moon.

Multiple Choice

This is the dark part of a shadow, where a total eclipse would occur

• Cone

• Umbra

• Penumbra

Multiple Choice

This is the lighter part of the shadow, where a partial eclipse would be

• Cone

• Umbra

• Penumbra

Gravity is the force that draw two objects together

We are drawn to the center of Earth by gravity.

Multiple Choice

What two factors affect gravity?

• Mass and Weight

• Weight and Distance

• Mass and Distance

Multiple Choice

Objects with more mass have a ______ gravitational force

• Stronger

• Weaker

Multiple Choice

As objects get further apart their gravitational force gets

• Stronger

• Weaker