Science Chapter 9

Question 1

Reference Point

Answer 1

A place or object used for comparison to determine if something is in motion

Question 2

Average Speed

Answer 2

The total distance traveled divided by the total time

Question 3

Velocity

Answer 3

Speed in a given direction

Question 4

Acceleration

Answer 4

The rate at which velocity changes

Question 5

Speed

Answer 5

The distance an object can travel in one unit of time

Question 6

Motion

Answer 6

When an object’s distance from another object is changing

Question 7

Meter

Answer 7

The basic SI unit of length

Question 8

International System of Units (SI)

Answer 8

The system of measurement scientists use to communicate information clearly

Question 9

Slope

Answer 9

The steepness of a line on a graph

Question 10

The prefix that means “one hundredth” is _______

Answer 10

centi-

Question 11

A meter is a little longer than a _______

Answer 11

yard

Question 12

The prefix kilo- means what?

Answer 12

“one thousandth”

Question 13

KHDUDCM

Answer 13

Kilo, hecto, deca, unit/gram/meter, deci, centi, mili

Question 14

What equation do you use to calculate the speed of an object?

Answer 14

Speed = distance/time

Question 15

What equation do you use to calculate the average speed of an object?

Answer 15

Average speed = total distance/total time

Question 16

slope = ?

Answer 16

rise/run or Y2 - Y1/X2-X1

Question 17

Acceleration is what? (hint - do not give it’s definition)

Answer 17

Increasing speed, decreasing speed, changing direction

Question 18

What is the equation you use to find acceleration?

Answer 18

Acceleration = final speed - initial speed/time

Question 19

Relative motion

Answer 19

Whether or not an object is in motion depends on the reference point

Question 20

Instantaneous speed

Answer 20

The rate at which an object is moving at a given instant in time