Study 121 Flashcards
Kinetic energy
the movement of the molecules is known as kinetic energy
Temperature
the substance around us, the average amount of kinetic energy in something
Molecular
the particles around us
Liquid
molecules move a little more freely
Gas
molecules move very freely
Solid
matter vibrates
Matter
any object with a mass
Gas
molecules moving freely molecules
Radiation:
heat passes through energy
Convection
heat passes through liquid or gas
Conduction
heat passes through matter.
Independent Variable
the variable being changed
Dependent Variable
The Variable the variable being affected by the changed
Control group
The original test materials with their original properties(materials).
Constant
The variable that doesn’t change
Cold Energy
There is no such thing!
Constant
The variable that doesn’t change
Temperature
kinetic energy of the molecules of a substance
Hypothesis
: a educated guess
Conductor
a movement of heat through a material
Volume
The quantity of 3-dimensional space enclosed by a closed surface
Insulator
keeps heat in and keeps cold out
Radiation
Heat as waves move through the air and don’t need any matter.
Conduction
The movement of heat throw another object.
Matter
Has mass and takes up space
Conduction
heat moves through
Experimental group
the group you choose to change
control group
the starting experiment without the change
Kinetic Theory:
the theory of kinetic energy
The independent variable
the variable you can decide to change or the x axis
The dependent variable
responding variable that changes because of the independent variable on the y axis)
Key on a graph
the key explains the symbols on a graph
Thermometer:
a tool used to measure the kinetic energy of matter
Constant
a variable that stays the same
Conduction
Heat moves through matter
Convection
Heated fluid (gas/liquid) moves
Radiation
Energy (heat) moves by waves (no matter needed)
Kinetic Theory
- A gas consists of molecules in constant random motion.
- Gas molecules influence each other only by collision; they exert no other forces on each other.
- All collisions between gas molecules are perfectly elastic; all kinetic energy is conserved.
- 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.
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.
What is the independent variable?
A variable that we choose to Change.
What is the Dependent Variable?
A variable that is effected, that we measure
What is the Constant?
A variable that is not changing (stays the same in control and in all the trials)
What is the Experimental group?
A group were it has an independent variable that changes a factor.
What is the Control Group?
A group were it does NOT have an independent variable and that has a constant factor. The original
True or False:
Cold exists
False
True or False:
Solid is idle but vibrating
True
What State of matter has more kinetic energy than others?
Gas
What state of matter has a decent kinetic energy
Liquid
What State of matter has almost no kinetic energy and vibrates?
Solid
True or False: Heat changes kinetic energy
True
True or false: low heat decreases kinetic energy
True
True or false: low heat increases kinetic energy
Fals
What matter slides past other molecules and not fixed?
Liquid
What is Energy Absorption?
Energy Absorption :the ability of materials to absorb impact energy by means of controlled failure mechanisms and modes
What matter is moving freely?
GAS
What matter is tightly packed, fixed, and only vibrates?
SOLID
What is Radiation?
Heated air molecules moving in waves. Can move through space
What is Convection?
Heat movement fluids that are circling constantly.
What is the Independent Variable?
The variable chosen to change (X axis) To see what changes after the experiment.
What is the Dependent Variable?
The variable that changes based on the independent variable (Y axis)
What is the Constant?
the things that don’t change between the control and the experimental group.
What is Kinetic Energy?
the amount of molecular movement in one place.
What is Temperature?
The average amount of kinetic energy in a substance
What is Conduction?
Heat transferred by direct contact (touch)
As heat is added to matter. What happens to the molecules?
They speed up and move further apart
True or False: An independent variable changes based on the dependent variable
False
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
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.
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
What State of matter has more kinetic energy than others?
Gas
What is Radiation?
Heated air molecules moving in waves. Can move through space
What is the Experimental group?
A group were it has an independent variable that changes a factor.
True or False: Heat decreases kinetic energy
False
True or false: low heat increases kinetic energy
True
True or False:
Solid is idle but vibrating
True
What matter is tightly packed, fixed, and only vibrates?
Solid
True or False: Heat changes kinetic energy
True
