Energy, Work, and Machines

1.

Multiple Choice

30 sec

1 pt

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

Chemical

Thermal

Potential

Electrical

2.

Multiple Choice

30 sec

1 pt

Energy that is stored is ________ energy.

Kinetic

Electrical

Potential

Chemical

3.

Multiple Choice

30 sec

1 pt

What is the formula for work?

W= F x D

W= D/T

W= D x T

W= F/D

4.

Multiple Choice

30 sec

1 pt

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.

5.

Multiple Choice

30 sec

1 pt

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.

6.

Multiple Choice

30 sec

1 pt

Two or more simple machines that work together is called_______.

Simple Machine

Compound Machine

Screw

Wedge

7.

Multiple Choice

30 sec

1 pt

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.

8.

Multiple Choice

30 sec

1 pt

Power is measured in_________.

Watts

Joules

Newtons

Calories

9.

Multiple Choice

30 sec

1 pt

What simple machine can be found in an ax?

Pulley

Wedge

Screw

Incline Plane

10.

Multiple Choice

30 sec

1 pt

What formula is used to calculate power?

P= W x T

P= W + T

P= W/T

W=P/T

11.

Multiple Choice

30 sec

1 pt

A system of pulleys is called a(n)_________.

Fixed system

compound machine

block and tackle

Dual Pulley

12.

Multiple Choice

30 sec

1 pt

A device that makes work easier is a _________.

Machine

Simple Machine

Compound

Compound Machine

13.

Multiple Choice

30 sec

1 pt

What are the six simple machines?

Lever,Pulley,Wheel & Axle, Screw, Incline Plane, Wedge

Wedge, Box, Paper, Lever, Scissors, Pen

Wedge, lever pulley, screw, incline plane, bike

Scissors, bike, car, lever, pulley, wedge

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