Unit 2 Study Guide

A student is talking with her mom about the picture below. He/she explains why part

of Earth is light and the other half is dark. Which reasoning best describes why the

Earth has day and night

• The moon rotates on an axis.

• The Earth rotates on an axis.

• The moon revolves around the Earth.

• The Earth revolves around the sun.

Tags

NGSS.MS-ESS1-1

A student finds this model on a website.

According to the model, what season is occurring in the Southern Hemisphere at

position A

• fall

• spring

• summer

• winter

Tags

NGSS.MS-ESS1-1

What keeps the Earth in its orbit?

• The Sun’s speed rotating

• The Sun’s gravitational pull

• Earth’s rotation direction

• Earth’s location between the other planets

Tags

NGSS.MS-ESS1-2

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NGSS.MS-PS2-5

The diagram shows the phases of the Moon as they are seen from the surface of

Earth

Based upon this diagram, which numbers represent the first and third quarter

phases of the Moon?

• Numbers 1 and 5

• Numbers 3 and 5

• Numbers 3 and 7

• Numbers 5 and 7

Tags

NGSS.MS-ESS1-1

Four students used the diagram to study the relationships in the Earth-Moon-Sun

system

Which students are correct?

• Student 1 and Student 2

• Student 2 and Student 3

• Student 1 and Student 3

• Student 2 and Student 4

Tags

NGSS.MS-ESS1-1

One complete revolution of Earth around the sun is called a

• day

• night

• month

• year

When is the force of gravity between two objects in the solar system the greatest?

• Masses are large and objects are close together.

• Masses are large and objects are far apart.

• Masses are small and objects are close together.

• Masses are small and objects are far apart.

Tags

NGSS.MS-ESS1-2

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The two forces that combine to keep the planets in orbit are

• gravity and mass

• weight and mass

• gravity and inertia

• inertia and mass

Tags

NGSS.MS-ESS1-2

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Why isn’t there an eclipse every month

• The Earth is bigger than the moon.

• The orbits of the Earth and moon are different shapes.

• The moon moves faster than Earth.

• The Earth's orbit around the sun is not in the same plane as the Moon's orbit

  around the Earth.

Tags

NGSS.MS-ESS1-1

Earth has seasons because

• it is tilted on its axis

• it rotates on its axis

• it gets further away from the sun

• one side faces away from the sun

Tags

NGSS.MS-ESS1-1