The sun appears to travel across the sky because:

• The Earth rotates on its axis.

• The sun moves around the Earth.

• The Earth revolves around the sun.

• The sun rotates on its axis.

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NGSS.MS-ESS1-1

Earth spins on its​ (a)   , which is tilted at​ (b)   degrees. It is called a ​ (c)   and takes​ (d)   . Earth​ (e)   around the sun.

• axis
• 23.5
• rotation
• 24 hours
• revolves
• 27.3
• 365 days
• 39

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NGSS.MS-ESS1-1

Does Earth's distance from the sun greatly affects the changing seasons?

• Yes, the distance determines the amount of sunlight received.

• No, the tilt of Earth's axis and Earth's revolution is the main reason for seasons, not the distance.

• Yes, both distance and tilt equally affect the seasons.

• No, the tilt of the earth's axis and Earth's rotation is the main reason for seasons, not the distance.

At what position were the most direct rays in the Northern Hemisphere? ​ (a)   What season would the Northern Hemisphere be experiencing?​ (b)  

• B
• Summer
• A
• C
• D
• Winter
• Spring
• Fall

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NGSS.MS-ESS1-1

At what positions were the most direct rays located at the equator? ​ (a)   What season would the Northern Hemisphere be experiencing?​ (b)  

• A and C
• Fall and Spring
• A and B
• B and D
• C and D
• Winter and Summer
• Spring and Summer
• Fall and Winter

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NGSS.MS-ESS1-1

9. How is a solstice different from an equinox?

• A solstice occurs when the Sun ray directly hit the most north or most southern point due to the Earth's tilt. An equinox is when the sun's rays hit the equator and there is no tilt of the Earth.

• An equinox occurs when the Sun ray directly hit the most north or most southern point due to the Earth's tilt. A solstice is when the sun's rays hit the equator and there is no tilt of the Earth.

• A solstice occurs twice a year, while an equinox occurs only once a year.

• A solstice is when the moon blocks the sun's rays causing a solar eclipse and an equinox is when the earth blocks the sun's rays causing a lunar eclipse.

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NGSS.MS-ESS1-1

Where does “moonlight” really come from?

• The Sun

• The Moon

• The Stars

• The Earth

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11. What is happening when the moon phases are waxing?

• The visible portion of the moon appears to be getting smaller.

• The visible portion of the moon appears to be getting larger.

• The visible portion of the moon is staying the same size.

• The moon is disappearing.

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NGSS.MS-ESS1-1

12. What is happening when the moon phases are waning?

• The visible portion of the moon appears to be getting larger.

• The visible portion of the moon appears to be getting smaller.

• The visible portion of the moon is staying the same size.

• The moon is disappearing completely.

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NGSS.MS-ESS1-1

Label the moon phase for each number listed below.

• 3

• New Moon

• 4

• Full Moon

• 1

• Waning Crescent

• 5

• Waxing Gibbous

• 8

• First Quarter

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NGSS.MS-ESS1-1