8th Grade Science Review #1

A plastic stick is attracting small pieces of brightly colored paper. If the stick has a positive charge, then the paper that sticks to it must have

• A smaller charge

• A greater charge

• A negative charge

• A positive charge

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PS.8.1 (Level 2) - Static Electricity

There are many forces acting on this car. Two of them are shown. What is the net (resulting) force?

Which claim is correct? The Net Force is...

• 30 N to the left

• 30 N to the right

• 70 N to the left

• 70 N to the right

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PS.8.2 (Level 2) Net force of car

Which of the following discoveries is evidence supporting the idea of continental drift?

• the discovery of matching plant and animal fossils found on different continents

• the discovery of sea-floor rock patterns due to magnetic reversals

• the discovery that most earthquakes are near plate boundaries

• the discovery that rock age increases as distance from mid-ocean ridges increases

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NGSS.MS-ESS2-3

Using the model in the picture, which layer of the Earth is represented by the Cork?

• Mantle

• Lithosphere

• Core

• Crust

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NGSS.MS-ESS2-1

Using the model in the picture, which layer of the Earth is represented by the Water?

• Mantle

• Core

• Lithosphere

• Crust

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Using the model in the picture, which layer of the Earth is represented by the Heat Source?

• Mantle

• Core

• Lithosphere

• Crust

Tags

NGSS.MS-ESS2-1