CHAPTER 8 FORCE

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?

• The larger person moving further away from the center.
• Moving the smaller person closer to the center.
• Moving the smaller person further from the center.
• Making the larger person do nothing.

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NGSS.HS-PS2-1

What is the equation used to calculate pressure?

• pressure= force/mass
• pressure =mass/volume
• pressure=area/force
• pressure=force/area

What is the unit of measurement for pressure?

• pascal
• grams
• milliters
• meters

Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.

• True
• False

Pressure decreases when the surface area over which a force is applied increases

• True
• False

What pressure does a 4000N horse exert on the ground if each foot is 10cm²?

• 40 N/cm²
• 100 N/cm²
• 400 N/cm²
• 10 N/cm²

Which of these animals would probably cause the greatest pressure on the ground?

• A fat cow with big feet
• A fat cow with small feet
•  A calf with big feet
• A calf with small feet

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Where is pressure the greatest on the dam?

• D
• C
• B
• A

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NGSS.MS-ETS1-1

Convert 10 kg to Newtons

• 0.098 N
• 4.5 N
• 100 N
• 98 N

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NGSS.MS-PS2-4