Science Court Work

What did the jury decide about Mary and Joe's work?

• Joe works harder

• Neither works at all

• Both work the same amount

• Mary works harder

What is the scientific definition of work?

• Using force to move an object

• Sweating while working

• Lifting without tools

• Reading books

What does Mary use to help her lift heavy objects at work?

• a simple machine

• A lever

• Her bare hands

• A robot

Why does Joe appear to work harder than Mary?

• He sweats more

• He uses a lever

• He reads books

• He works fewer hours

What concept allows Mary to do the same amount of work with less force?

• Mechanical advantage

• Workforce management

• Physical strength

• Energy conservation

How much more work does a simple machine do than a person?

• the same amount of work

• more work

• less work

• no work

Work is...

• not just how hard you push but how hard and how far

• less with a machine.

• more with a machine.

• not just how hard you think but who's doing the thinking.

Tags

NGSS.MS-PS3-5