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Flashcards in Semester 2 Turley Deck (100)
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1

Speed is the rate of change in _____.

distance

2

To describe velocity you need to know _______.

speed and direction

3

Acceleration involves a change in ____

speed and direction

4

Inertia ____

resists a change in motion of an object

5

Momentum is a measure of _______

how hard it is to stop an object

6

Forces that are equal in size but opposite in direction are

balanced forces

7

Newton's first law of motion states that an object remains at rest unless a ____ force acts on it.

net

8

Whenever a body is in motion, there is always ___ to oppose the motion.

friction

9

The relationship among force, mass and acceleration is stated in _______.

Newton's second law

10

The statement "for every action, there is an equal but opposite reaction " is a statement of

Newton's third law

11

When a rubber band is stretched, it has ____ energy.

potential

12

A blimp around over the Super Bowl has ____ energy.

kinetic and potential

13

A green plant has ____ energy

chemical

14

In every energy transformation, some energy is always "lost" as ___

thermal energy

15

A slanted surface used to raise an object is a(n) ___

inclined plane

16

A device that does work with only one movement and changes the size or direction of a force is a(n)

screw

17

A bar that is free to pivot about a fixed point is a ___

lever

18

The rate at which works is done is called

power

19

The amount of which by which a machine multiplies an input force is called the

mechanical efficiency

20

When two or more simple machines work together, they are called a(n)

compound machine

21

Three of the following simple machines are basically the same. The one that does not belong with the group is ____
- lever
- pulley
- wedge
- wheel and axle

wedge

22

Temperature is a measure of ____ of the particles in an object

the average kinetic energy

23

The thermal energy of an object is

its kinetic energy plus its potential energy

24

Heat is thermal energy transferred from one object to another because of a difference in

temperature

25

Fast food restaurants keep food hot with infrared lamps. The heat is transferred to the food by

radiation

26

When a pot of water is put on a stove, the water at the top gets hot primarily by

convection

27

Water makes a good coolant because it has a

high specific heat

28

Which of the following is not an example of a mechanical wave?
- sound wave
- water wave
- earthquake wave
- radio wave

radio wave

29

Which of the following is not an example of an electromagnetic wave?
- sound wave
-x-rays
-red light
- gamma rays

sound wave

30

Which one of the following is not an example of a compressional wave?
- wave moving through a coiled spring
- sound traveling through the air
- sound traveling through water
- green light traveling through the air

green light traveling through the air