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work, power, machines QUIZ

Authored by Emma Hobbs

Physics

9th Grade

NGSS covered

Used 1+ times

work, power, machines QUIZ
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30 questions

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1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

A machine is defined as an object that makes work easier by changing the __________,_________, OR ___________ (Select ALL that apply) over which a force is applied.

Size
Direction
Power
Distance

Tags

NGSS.MS-ETS1-2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If Priya lifts a 10 N object 2 meters, how much work is done?

A. 5 J

B. 20 J

C. 12 J

D. 8 J

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Daniel is building a treehouse and needs to lift heavy wooden planks. He has access to several tools. Which of the following is not one of the six simple machines that could help him?

A. Lever

B. Pulley

C. Engine

D. Wedge

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Power is defined as:

A. Force per unit area
B. Work done over time
C. Mass times velocity
D. Energy stored in an object

Tags

NGSS.MS-PS3-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Evelyn is working on a science project where she needs to measure the power of a small motor. What is the SI unit for power?

A. Joule

B. Pascal

C. Newton

D. Watt

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which simple machine is found at the tip of a knife?

A. Screw
B. Wedge
C. Lever
D. Pulley

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Jackson is using a shovel to dig a hole in his backyard. The shovel is an example of a:

A. First-class lever

B. Second-class lever

C. Third-class lever

D. Pulley system

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