Nature of Science
Laws of Motion
Simple Machines
Matter
Energy
100
A testable prediction is a(n) ______ a. Hypothesis b. Experiment c. Exercise d. Variable
a. Hypothesis
100
9) The downward force exerted on an object falling through air is _______ a. Terminal velocity b. Momentum c. Gravity d. Weightlessness
c. Gravity
100
A slanted surface used to raise an object is a(n) _______. a. Inclined plane (ramp) b. Screw c. Pulley d. Hammer
a. Inclined plane (ramp)
100
Three examples of physical changes are _______. a. Freezing of water, evaporation of gasoline, and rusting of a nail b. Boiling of water, bursting of a balloon, and sawing wood c. Sawing of wood, crushing of a can, and toasting of a marshmallow d. Burning of gasoline, rotting of an egg, and exploding of fireworks
b. Boiling of water, bursting of a balloon, and sawing wood
100
Which of the following is not used to calculate kinetic energy? a. Mass b. velocity c. Height
c. Height
200
When designing and experiment, the first step is to _________. a. State a hypothesis b. List a procedure c. State the problem d. Analyze the data
c. State the problem
200
10) A feather will fall through the air more slowly than a brick because of _______. a. Gravity b. Air resistance c. Inertia d. Momentum
b. Air resistance
200
A device that does work with only one movement and changes the size or direction of a force is the definition of a(n) _______. a. Compound machine b. Simple machine c. Input machine d. Ideal machine
b. Simple machine
200
All substances are built from _______. a. Mixtures b. Atoms c. Metals d. Salts
b. Atoms
200
Which of the following is not used to calculate potential energy? a. Mass b. Gravitational acceleration c. Height d. Velocity
d. Velocity
300
4) A factor that changes in an experiment from manipulation of the independent variable is the ______________. a. Control b. Hypothesis c. Constant d. Dependent variable
d. Dependent variable
300
Acceleration due to gravity is _______. a. 98 m/s2 b. 9.8 m/s2 c. .98 m/s2 d. .098 m/s2
b. 9.8 m/s2
300
A bar that is free to pivot about a fixed point is a _______. a. Lever b. Wedge c. Fulcrum d. Ramp
a. Lever
300
An atom is composes of protons, neutrons and _______. a. Photons b. Antiprotons c. Bosons d. Electrons
d. Electrons
300
The _______ energy of an object increases with its height. a. Chemical b. Kinetic c. Thermal d. Potential
d. Potential
400
An organized process used to gather observations and test a hypothesis is a(n) _______. a. Problem b. Experiment c. Exercise d. Constant
b. Experiment
400
The inertia of an object depends on its a. Momentum b. Speed c. Mass d. Color
c. Mass
400
Two inclined planes that meet form a simple machine called a(n) _______. a. Screw b. Input arm c. Lever d. Wedge
d. Wedge
400
The four states of matter are solid, liquid, gas and ________. a. HD b. Standard Definition c. Plasma d. Fluid
c. Plasma
400
The kinetic energy of an object increases as its _______ increases. a. Height above earth b. Velocity c. Potential energy d. Volume
b. Velocity
500
8) An explanation of an event that is based on repeated observations and experiments is a ______. a. Problem b. Hypothesis c. Theory d. Variable
c. Theory
500
A car rounding a curve is subject to _______ force. a. Rolling b. Static c. Centripetal d. Gravitational
c. Centripetal
500
An inclined plane wrapped around a cylindrical post is a a. Wedge b. Screw c. Pulley d. Lever
b. Screw
500
A beam of light can be seen as it passes through a(n) _______. a. Colloid b. Solution c. Element d. Compound
a. Colloid
500
The law of _______ states that energy in a system can change forms but can never be created or destroyed. a. Conversion of energy b. Conservation of energy c. Consecration of energy d. Construction of energy
b. Conservation of energy
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