Checkpoint

How is an electromagnet different from a magnet?

Tags

NGSS.MS-PS2-3

How did noticing cause and effect lead to Hans Christian Oersted's discovery?

Why are electromagnets used in many electronic devices?

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NGSS.MS-PS2-3

What happens when a magnet is moved back and forth inside a coiled wire?

Tags

NGSS.MS-PS2-5

NGSS.MS-PS3-5

Lesson 1 Checkpoint

Why is water in the Baltic Sea less salty than most ocean water?

• Because the water in Baltic Sea is warm.

• Because many river flows into the Baltic Sea.

• Because less river flows into the Baltic Sea.

• Because the water in Baltic Sea turns into vapor quickly

Tags

NGSS.MS-ESS2-4

Lesson 2 Checkpoint

3. What happens to air pressure as you go higher in atmosphere?

• It decreases

• It increases

Lesson 3 Checkpoint

1. Why does an air mass that forms over a desert have low humidity?

• Because the dessert produce little water vapor, therefore the air mass will have high humidity.

• Because the dessert produce many water vapor, therefore the air mass will have low humidity.

• Because the dessert produce little water vapor, therefore the air mass will have low humidity.

• Because the dessert produce many water vapor, therefore the air mass will have high humidity.

Tags

NGSS.MS-ESS2-5

Lesson 3 Checkpoint

2. What is an air mass?

• It is a large body of air

• It is a small body of air

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NGSS.MS-ESS2-5

Lesson 4 Checkpoint

2. How are curving lines used on a weather map?

• They record daily weather measurements.

• They show cold fronts.

• They connect places with the same air pressure.

• They show warm fronts.

Tags

NGSS.MS-ESS2-5

About how much of Earth's water is frozen in glaciers and ice caps?

• 97/100

• 1/100

• 2/100

• 100/100

Tags

NGSS.MS-ESS2-4