Ch. 11 Test

Why do you need a frame of reference to know if something is moving?

• To measure the speed of the object

• To determine the object's color

• To know the object's size

• To compare the object's position to something else

What is motion?

• The change in position of an object over time

• The color of an object

• The size of an object

• The weight of an object

What two things do you need to calculate speed?

• Distance and time

• Mass and volume

• Height and width

• Temperature and pressure

What are three units of time?

• Meters, liters, grams

• Seconds, minutes, hours

• Kilograms, pounds, ounces

• Celsius, Fahrenheit, Kelvin

How are units of speed written?

• Distance per time

• Mass per volume

• Temperature per pressure

• Energy per force

Tags

NGSS.MS-PS3-1

What is the difference between speed and velocity?

• Speed includes direction, velocity does not

• Velocity includes direction, speed does not

• Speed is a vector, velocity is not

• Speed is always faster than velocity

What does the speed of an object tell you about the distance it can travel?

• The color of the object

• The time it will take to travel a certain distance

• The weight of the object

• The shape of the object

Tags

NGSS.MS-PS3-1

What is acceleration?

• The rate of change of velocity

• The speed of an object

• The distance an object travels

• The mass of an object

Can acceleration be negative or positive?

• Only positive

• Only negative

• Both negative and positive

• Neither negative nor positive

If you stay at a constant speed, are you accelerating?

• Yes

• No