Science-Chapter 2 (Lessons 1 & 2)

A scientist uses what he knows to modify a wedge. The new invention will help keep roads clear of ice and snow in winter. What did the scientist develop?

• a new scientific method
• a new technology
• a new inquiry
• a new design process

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What can you do with a lever?

• hold two boards together
• slice through an object
• turn an axle
• lift up a box

Which of the following is an example of work?

• pushing on a bike pedal
• solving a math problem
• pushing a rock that does not move
• reading a book

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Identify the simple machine shown here.

• a wheel and axle
• a pulley
• an inclined plane
• a wedge

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Which simple machine helps you to hold things together?

• a screw
• a pulley
• an inclined plane
• a wheel and axle

the use of a force to move an object across a distance 

• technology
• research
• work
• design process

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NGSS.MS-PS2-2

a simple machine to lift and move things by using a stiff bar that rests on a support

• inclined plane
• lever
• wedge
• pulley

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a slanting surface that connects a lower level to a higher level 

• wedge
• lever
• inclined plane
• pulley

a machine that can change the direction or amount of force needed to move an object 

• pulley
• wedge
• screw
• inclined plane

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

use of science knowledge to invent tools and new ways of doing things 

• research
• design process
• technology
• prototype

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