Energy, Work, and Machines

Mechanical energy is the total kinetic and ________ energies in a system.

• Chemical

• Thermal

• Potential

• Electrical

Tags

NGSS.MS-PS3-2

Energy that is stored is ________ energy.

• Kinetic

• Electrical

• Potential

• Chemical

Tags

NGSS.MS-PS3-2

What is the formula for work?

• W= F x D

• W= D/T

• W= D x T

• W= F/D

What is the Law of Conservation of Energy?

• Energy stays the same

• Energy may change form but it cannot be created nor destroyed.

• Energy decreases

• Energy Increase and decreases after being destroyed.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

What is energy?

• The ability to move

• The ability to stay the same with no change

• The ability to cause change in movement

• The ability to cause change.

Tags

NGSS.MS-PS3-5

Two or more simple machines that work together is called_______.

• Simple Machine

• Compound Machine

• Screw

• Wedge

What is required for work to be done?

• Movement

• Time and movement

• something has to move and the motion must be the same direction as force

• something has to move and the motion must increase as well as force.

Power is measured in_________.

• Watts

• Joules

• Newtons

• Calories

What simple machine can be found in an ax?

• Pulley

• Wedge

• Screw

• Incline Plane

What formula is used to calculate power?

• P= W x T

• P= W + T

• P= W/T

• W=P/T

Tags

NGSS.MS-PS3-5