unit 6 review

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance
• reduce the amount of force needed to do work
• change the direction of the applied force
• all of the above

Identify this simple machine

• Lever
• Wheel & Axle
• Inclined Plane
• Screw

An inclined plane wrapped around a rod forms this simple machine 

• lever
• pulley
• screw
• wedge 

Tags

NGSS.HS-PS2-1

This device

• wedge
• lever
• incline plane
• wheel and axle

Name this simple machine. 

• Pulley
• Wheel and Axle
• Inclined Plane
• Lever

Which of the following is a true statement about work?

• It measures how quickly an object accelerates 
• It measures how much effort is applied over a certain distance
• It measures the change in an object's rate of speed
• It measures how much time it takes to move a massive object

A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 

• 77 J
• 7.7 J 
• 0.7 J 
• 770 J 

Tags

NGSS.HS-PS3-2

Which of these is a measure of force?

• 100 newtons
• 100 meters per second
• 100 joules
• 100 watts

Tags

NGSS.HS-PS2-1

Which of the following would produce the most power?

• A mass of 10 kilograms lifted 10 meters in 10 seconds 
• A mass of 10 kilograms lifted 10 meters in 5 seconds
• A mass of 5 kilograms lifted 10 meters in 5 seconds
• A mass of 5 kilograms lifted 5 meters in 10 seconds

The FARTHER you move an object, the more work you do.

• True
• False

Tags

NGSS.MS-PS3-5