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
