Unit 11 Vocab Practice Work & Power

When force is used to move an object across a distance, this is called...

• effort

• power

• energy

• work

Tags

NGSS.MS-PS2-2

The SI unit of work is?

• Joules
• Watts
• Newtons
• meters

Power is a measure of how much ______ can be done in a set amount of ______.

• Work, Time
• Work, Energy
• Energy, Force
• Force, Work

Which of these is a measurement of power?

• 100 joules
• 100 watts
• 100 meters per second
• 100 hertz

The percentage of the input work that is converted to output work

• mechanical advantage

• efficiency

• joule

• machine

The ratio of output force to input force- tells you how much easier the task will feel

• work

• mechanical advantage

• efficiency

• power

A machine with few or no moving parts is called a ______.

• machine
• compound machine
• simple machine
• work

In a pair of scissors, each arm is an example of a

• wedge

• lever

• inclined plane

• pulley

Tags

NGSS.MS-PS2-2

What simple machine can be used to split things apart and also it can hold open a door?

• Lever
• Pulley
• Wedge
• Screw

What type of simple machine are these people using to move the wheel chair into the school bus?

• lever
• wedge
• inclined plane
• pulley

Tags

NGSS.MS-ETS1-2

NGSS.MS-PS2-1

NGSS.MS-PS2-2