Science - Chapter 6 - Test 1/10/14

Question 1

The steepness of the line on a graph is called the ______.

Answer 1

The steepness of the line on a graph is called the slope.

Question 1

When you know both the _________ of an object’s motion, you know the velocity of the object.

Answer 1

When you know both the speed and direction of an object’s motion, you know the velocity of the object.

Question 1

When a car speeds up it is __________.

Answer 1

When a car speeds up it is accelerating.

Question 3

A reference point is a ________ used for comparison to determine if something is in motion.

Answer 3

A reference point is a place or object used for comparison to determine if something is in motion.

Question 4

Another name for deceleration is _________.

Answer 4

Another name for deceleration is negative acceleration.

Question 4

When boat slows down the skier __________.

Answer 4

When boat slows down the skier decelerates.

Question 5

Define:velocity

Answer 5

speed in a given direction

Question 6

Speed that does not change is ________.

Answer 6

Speed that does not change is constant speed.

Question 7

What are the 3 types of speed?

Answer 7

1. average speed
2. constant speed
3. instantaneous speed

Question 8

Average speed is the ____________.

Answer 8

Average speed is the total distance traveled divided by the total time.

Question 8

Acceleration means “__________”.

Answer 8

Acceleration means “the process of speeding up”.

Question 10

An object is in motion if its _________ relative to another object.

Answer 10

An object is in motion if its position changes relative to another object.

Question 10

What is the equation used to find acceleration?

Answer 10

Question 12

You can show the motion of an object on a _____.

Answer 12

You can show the motion of an object on a line graph.

Question 13

Whenever an object’s speed changes, the object is ________.

Answer 13

Whenever an object’s speed changes, the object is* *accelerating.

Question 15

Speed in a given direction is called _________

Answer 15

Speed in a given direction is called velocity.

Question 16

A car ________ as it comes to a stop at a red light.

Answer 16

A car decelerates as it comes to a stop at a red light.

Question 18

The steeper the slope on a line graph, ________

Answer 18

The steeper the slope on a line graph, the greater the speed.

Question 19

On a line graph, time is shown on the _________.

Answer 19

On a line graph, time is shown on the horizontal axis, or x-axis.

Question 20

The rate at which velocity changes is ________.

Answer 20

The rate at which velocity changes is acceleration.

Question 21

Name 3 examples of acceleration.

Answer 21

1. increasing speed
2. decreasing speed
3. changing direction

Question 22

What is the equation used for speed?

Answer 22

Speed = distance / time

Question 23

Define:speed

Answer 23

the distance an object moves per unit of time

Question 24

Define: acceleration

Answer 24

the rate at which velocity changes

Question 25

You can graph acceleration using both _____________ and \_\_\_\_\_\_\_\_.

Answer 25

1. speed versus time 2. distance versus time

Question 26

Instantaneous speed is the speed at which \_\_\_\_\_\_\_\_\_\_\_\_.

Answer 26

Instantaneous speed is the speed at which **_an object is moving at a given instant in time._**

Question 27

On a line graph, distance is shown on the \_\_\_\_\_\_\_\_\_.

Answer 27

On a line graph, distance is shown on the **_vertical axis, or y-axis._**

Question 28

The speed of an object is the ______ the object moves per unit of time.

Answer 28

The speed of an object is the **_distance_** the object moves per unit of time.