Study 121 Flashcards
(77 cards)
1
Q
Kinetic energy
A
the movement of the molecules is known as kinetic energy
2
Q
Temperature
A
the substance around us, the average amount of kinetic energy in something
3
Q
Molecular
A
the particles around us
4
Q
Liquid
A
molecules move a little more freely
5
Q
Gas
A
molecules move very freely
6
Q
Solid
A
matter vibrates
7
Q
Matter
A
any object with a mass
8
Q
Gas
A
molecules moving freely molecules
9
Q
Radiation:
A
heat passes through energy
10
Q
Convection
A
heat passes through liquid or gas
11
Q
Conduction
A
heat passes through matter.
12
Q
Independent Variable
A
the variable being changed
13
Q
Dependent Variable
A
The Variable the variable being affected by the changed
14
Q
Control group
A
The original test materials with their original properties(materials).
15
Q
Constant
A
The variable that doesn’t change
16
Q
Cold Energy
A
There is no such thing!
17
Q
Constant
A
The variable that doesn’t change
18
Q
Temperature
A
kinetic energy of the molecules of a substance
19
Q
Hypothesis
A
: a educated guess
20
Q
Conductor
A
a movement of heat through a material
21
Q
Volume
A
The quantity of 3-dimensional space enclosed by a closed surface
22
Q
Insulator
A
keeps heat in and keeps cold out
23
Q
Radiation
A
Heat as waves move through the air and don’t need any matter.
24
Q
Conduction
A
The movement of heat throw another object.
25
Matter
Has mass and takes up space
26
Conduction
heat moves through
27
Experimental group
the group you choose to change
28
control group
the starting experiment without the change
29
Kinetic Theory:
the theory of kinetic energy
30
The independent variable
the variable you can decide to change or the x axis
31
The dependent variable
responding variable that changes because of the independent variable on the y axis)
32
Key on a graph
the key explains the symbols on a graph
33
Thermometer:
a tool used to measure the kinetic energy of matter
34
Constant
a variable that stays the same
35
Conduction
Heat moves through matter
36
Convection
Heated fluid (gas/liquid) moves
37
Radiation
Energy (heat) moves by waves (no matter needed)
38
Kinetic Theory
1. A gas consists of molecules in constant random motion.
2. Gas molecules influence each other only by collision; they exert no other forces on each other.
3. All collisions between gas molecules are perfectly elastic; all kinetic energy is conserved.
4. The volume actually occupied by the molecules of a gas is negligibly small; the vast majority of the volume of the gas is empty space through which the gas molecules are moving.
39
Conservation of Energy
The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
40
What is the independent variable?
A variable that we choose to Change.
41
What is the Dependent Variable?
A variable that is effected, that we measure
42
What is the Constant?
A variable that is not changing (stays the same in control and in all the trials)
43
What is the Experimental group?
A group were it has an independent variable that changes a factor.
44
What is the Control Group?
A group were it does NOT have an independent variable and that has a constant factor. The original
45
True or False:
| Cold exists
False
46
True or False:
| Solid is idle but vibrating
True
47
What State of matter has more kinetic energy than others?
Gas
48
What state of matter has a decent kinetic energy
Liquid
49
What State of matter has almost no kinetic energy and vibrates?
Solid
50
True or False: Heat changes kinetic energy
True
51
True or false: low heat decreases kinetic energy
True
52
True or false: low heat increases kinetic energy
Fals
53
What matter slides past other molecules and not fixed?
Liquid
54
What is Energy Absorption?
Energy Absorption :the ability of materials to absorb impact energy by means of controlled failure mechanisms and modes
55
What matter is moving freely?
GAS
56
What matter is tightly packed, fixed, and only vibrates?
SOLID
57
What is Radiation?
Heated air molecules moving in waves. Can move through space
58
What is Convection?
Heat movement fluids that are circling constantly.
59
What is the Independent Variable?
The variable chosen to change (X axis) To see what changes after the experiment.
60
What is the Dependent Variable?
The variable that changes based on the independent variable (Y axis)
61
What is the Constant?
the things that don't change between the control and the experimental group.
62
What is Kinetic Energy?
the amount of molecular movement in one place.
63
What is Temperature?
The average amount of kinetic energy in a substance
64
What is Conduction?
Heat transferred by direct contact (touch)
65
As heat is added to matter. What happens to the molecules?
They speed up and move further apart
66
True or False: An independent variable changes based on the dependent variable
False
67
If I did an experiment with flowers and used the exact same pots and added different amounts of water and would see how tall they would grow what would be the constant, dependent variable, and independent variable?
Constant: The pots
Dependent Variable: How tall they would grow
Independent Variable: The different amounts of water
68
How does going to bed later affect how tired I am in the morning? What would the control be?
Control: Seeing how tired I am when I go to bed at my normal time to use as a comparison.
69
How does going to bed later affect how tired I am in the morning? What would the independent variable be?
The time I go to bed
70
What State of matter has more kinetic energy than others?
Gas
71
What is Radiation?
Heated air molecules moving in waves. Can move through space
72
What is the Experimental group?
A group were it has an independent variable that changes a factor.
73
True or False: Heat decreases kinetic energy
False
74
True or false: low heat increases kinetic energy
True
75
True or False:
| Solid is idle but vibrating
True
76
What matter is tightly packed, fixed, and only vibrates?
Solid
77
True or False: Heat changes kinetic energy
True
