Force and Motion
The term that describes the energy of motion
Kinetic Energy
The variable you change in an experiment
Independent Variable
A mixture where the substances are dissolved into each other
Top of a wave
Crest
Energy cannot be _________, only ___________
Created or destroyed
Transform
Two words that describe an object in motion
Speed and Direction
The variable you measure in an experiment
Dependent variable
A combination of two or more substances that retain their qualities and can be easily separated
Mixture
Bottom of a wave
Trough
A circuit that does not allow the flow of electricity
Open circuit
The total sum of all forces
Net force
A student wants to know which type of chocolate melts fastest. He put a Hershey's chocolate bar, a Mr. Beast chocolate bar, and a Tony's chocolate bar on a table under a heat lamp set at 68 degrees Fahrenheit.
What is the independent variable in this experiment?
The type of chocolate bar
Chex Mix is an example of a _________.
Mixture
The higher the frequency, the ________ the energy
Greater
Plastic ruler, wooden pencil, and cardboard boxes are all examples of ________
Insulators
To move a heavier object, a ________ force is required
Greater
A student wants to know which type of chocolate melts fastest. He put a Hershey's chocolate bar, a Mr. Beast chocolate bar, and a Tony's chocolate bar on a table under a heat lamp set at 68 degrees Fahrenheit.
What is the dependent variable in this experiment?
The amount of time the chocolate takes to melt
Lemonade or Kool Aid is an example of ________.
A Solution
Sound travels fastest through _______ because ________
A lightbulb transforms energy from _________ to _________
Electrical energy to radiant energy
A rollercoaster has the most kinetic energy when _______.
It is moving down its steepest slope (or moving the fastest)
Cathy wants to see which surface produces the most friction. She uses a ramp to roll a marble across tile, carpet, and sandpaper and measures the distance the marble travels.
What is the independent variable?
What is a constant variable?
The type of surface
The marble, the ruler used to measure, ramp size and slope, etc.
Methods for separating a solution or mixture
Answers will vary
Using a sieve, evaporation, magnets (if something has something magnetic in it), etc.
Sound is produced by _________
Static electricity occurs when __________.
Insulators are rubbed together, causing the movement of electrons and an imbalance of positive and negative charges