Light

Question 1

Speed

Answer 1

The rate at which an object moves

Question 2

Velocity

Answer 2

The speed of an objects in a given direction

Question 3

Force

Answer 3

A push or pull exerted on an object in an effort to change that objects velocity

Question 4

Electric circuit

Answer 4

A closed path through which electric current flows

Question 5

Simple machine

Answer 5

A device that either multiplies or redirects a force

Question 6

To people are sitting in a car and the passenger waves to a friend as the drive by. From the passengers view is the driver moving. From the person on the streets view is the driver moving.

Answer 6

From the passengers view the driver is not moving. From the walkers view he is. This means motion is relevant.

Question 7

25 meters
60 feet per second east
15 miles per hour south
30 kilometers per hour

Answer 7

Neither
velocity
velocity
speed

Question 8

Positive or negative acceleration
A rocketship taking off
A ball slowly stops rolling along the ground
A truck driver slams on the brakes
A truck driver hits the gas

Answer 8

Positive
Negative
Negative
Positive

Question 9

Say Newton’s 3 laws

Answer 9

An object in motion or at rest will stay that way until it is acted upon by an outside force

When an object is acted on by one or more outside forces, the total force is equal to the mass of the object times the resulting acceleration F= m*a

For every action they is an equiel and opisset reaction

Question 10

Match the illustration to Newtons 3 laws
Using a stronger force to push a piano compared to the force necessary to push a chair
A cannon moving backward when it shoots cannon ball
A stationary ball

Answer 10

2
3
1

Question 11

Name 7 simple machines

Answer 11

Wedge, lever, screw, pulley, inclined plane, wheel axle.

Question 12

What is the wavelength and amplitude on a wave.

Answer 12

The wavelength is the space between to tops of the wave. The amplitude is how much space is in between the mild and the top of the wave.

Question 13

What is the difference between a high pitch and a low pitch.

Answer 13

The high sound has a high frequency then the low one.

Question 14

What is the difference between transparent, translucent, opaque.

Answer 14

Transparent objects let all light through, like glass. Translucent objects let some light through, like a lamp shade. Opaque objects let no light through, like me.

Question 15

How do we see different colors.

Answer 15

When we look at a yellow shirt, all the light except yellow get absorbed.

Question 16

What characteristics of objects affect how much friction the object has.

Answer 16

Weight, shape, texture, how much of it is on the table.