ICP 1 Review for Unit 5 & 6: Energy and Waves

What is the definition of "work" in physics?

• The amount of force applied to an object

• The energy required to lift something

• The force applied to an object times the distance it moves

• The speed at which something moves

Tags

NGSS.MS-PS3-5

Which of the following is an example of work being done?

• A person holding a heavy book in place

• A person lifting a box off the floor

• A person standing still

• A person sitting in a chair

What unit is used to measure work?

• Joules (J)

• Newtons (N)

• Watts (W)

• Meters per second (m/s)

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is power?

• The ability to lift objects

• The amount of work done per unit of time

• The force needed to move an object

• The energy in a moving object

Which of the following is a simple machine?

• A pulley

• A computer

• A hammer

• A car

What is the unit of power?

• Joules (J)

• Newtons (N)

• Watts (W)

• Kilograms (kg)

Entropy is a measure of:

• How organized a system is

• The amount of work done on an object

• The energy transferred between objects

• How disordered a system is

Which of the following is NOT a simple machine?

• Lever

• Wheel and axle

• Inclined plane

• Engine

Which simple machine uses a rope to lift objects?

• Pulley

• Lever

• Wedge

• Screw

Tags

NGSS.MS-PS2-2

How can you increase the amount of power used to complete a task?

• Decrease the amount of work

• Increase the time it takes to do the work

• Increase the amount of work and decrease the time

• Reduce the amount of force applied