Earth's Rotation Test-5.9A, 4.9A

Gabriel makes the model shown with objects representing the sun, Earth, & the moon to use in a classroom demonstration.

Which action should he do with the objects to demonstrate a complete day-night cycle of Earth?

• Move the moon around Earth once

• Spin the sun in a circle once

• Move Earth around the sun once

• Spin Earth in a circle once on its axis

Answer explanation

Day and night cycle occur due to Earth's rotation.

For example, when using a globe, if you start at North America you must end at North America to show 1 complete day & night cycle (24 hours).

Tags

5.9A

4.9A

The sun appears to rise in the east & set in the west.

Which motion explains this phenomenon?

• Earth’s rotation on its axis

• The sun’s rotation on its axis

• Earth’s movement around the sun

• The moon’s movement around the sun

Answer explanation

The sun "appears" to move due to Earth's rotation; just like when you spin around and the room seems to move.

Tags

5.9A

4.9A

Objects that block part of the sun’s light form shadows on the ground. The size, shape, anddirection of the shadow changes during the day as the angle of the Sun’s light changes.

Which picture best shows what the stick’s shadow will look like at noon?

• Picture A

• Picture B

• Picture C

• Picture D

Answer explanation

Tags

5.9A

4.9A

The Sun appears to move across the sky during the day.

Which model presents the most accurate explanation for the apparent movement of theSun across the sky?

• 
• 
• 
• 

Answer explanation

The sun "appears" to move due to Earth's rotation; just like when you spin around and the room seems to move.

Tags

5.9A

4.9A

The diagram shows where the sun appears to be

throughout the day.

If the sun will be setting at 6:30 p.m., where will the sun MOST LIKELY appear at 3:00 p.m.?

Answer explanation

If you know when & where the sunrises (to the east), noon (directly above), and when & where the sunsets (to the west), you can easily infer the other times.

Tags

NGSS.MS-ESS1-1

Earth continuously rotates on its axis while also moving in an orbit.

About how much timedoes it take for Earth to make one complete

rotation on its axis?

• 24 hours

• 30 days

• 60 minutes

• 365 days

Tags

5.9A

4.9A

The diagram shows the shadow of a tree in a field at noon on a summer day.

The sun rises at 7:00 A.M. on this day. Which diagram best shows the shadow of the tree at 10:00 A.M. on the same day?

• 
• 
• 
• 

Answer explanation

If you know when & where the sunrises (to the east), noon (directly above), and when & where the sunsets (to the west), you can easily infer the other times.

Tags

5.9A

4.9A

Mr. Q asked his students to explain what they see in this picture.

Which two students gave correct explanations?

• Alex said the sun will set in less than 6 hours.

• Jayden said the sun will reach the east horizon in less than 10 hours,

• Sofia said the picture shows the sun in the afternoon.

• Natalie said the picture shows the location of the sun at noon.

Tags

5.9A

4.9A

Melanie builds a model of the solar system that includes a sphere representing Earth. The sphere turns in a full circle on its axis.

By using a model of Earth that spins on its axis, Melanie can best demonstrate -

• 
• 
• 
• 

Answer explanation

Day and night cycle occur due to Earth's rotation.

For example, when using a globe, if you start at North America you must end at North America to show 1 complete day & night cycle (24 hours).

Tags

5.9A

4.9A

A sundial helps keep track of time by using shadows cast by the sun. Dominic's school has a sundial on the playground. The picture shows Dominic's shadow on the sundial during four different times of the day.

Explain what causes Jimmy to see his shadow change throughout the day AND describe how his shadow changes from morning to evening.

Tags

5.9A

4.9A