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WorksheetsScience 8 Review Quiz
Total questions: 25
Worksheet time: 16mins
How are light and sound ALIKE?
Both travel as rays
Both can vary in pitch
Both are forms of energy that travel as waves
This is produced by vibrating objects through air
sound
energy
light
Sound travels through solids, but not through liquids and gases.
TRUE
FALSE
A student placed a pencil in a cup of water. The pencil appears broken because light
bends when it passes through water.
makes the water in the glass evaporate.
always travels in a straight line.
Which state of matter do sounds travel fastest in?
Solid
Liquid
Gas
Plasma
Why does sound travel faster in solids than in liquids or gases?
They are harder.
Solids have more energy.
The particles are closer together.
Roughly what is the speed of sound in air?
About 1 500 m/s
About 340 m/s
About 10 m/s
The speed of sound at 20 degrees Celcius is:
365 m/s
343 m/s
The warmer an object is, the ____________ sound will travel through it.
faster
slower
Newton's first law of motion is also called the law of _______
Conservation
Inertia
Acceleration
Action Reaction
If an object is in motion it will remain ______, unless an external force acts on it.
in motion
at rest
gravity
Objects with larger _____ also have greater inertia.
mass
gravity
energy
Newton's second law of motion can be represented by which of the following formula
a+b =C
F = m x a
S = d/t
What unit is used to measure force?
Newtons
Joules
Watt
Stored energy
Potential energy
Kinetic energy
The energy in motion
Potential energy
Kinetic energy
Potential energy is related to
position or height of an object
speed of an object
What is the kinetic energy of a bicycle that has a mass of 20 kg and is traveling at a velocity of 10 m/sec?
10 J
100 J
1000 J
10,000 J
What is the formula for potential energy?
PE = 1/2mv2
PE = 2mv2
PE = mv2
PE = mgh
When you do work you are exerting:
energy
speed
velocity
The unit for potential and kinetic energy is:
Newton
watt
Joule
What will cause an object to move?
Balanced forces
Unbalanced forces
If an object is stationary (not moving) the forces acting upon it are _____________
Balanced forces
Unbalanced forces
All objects have inertia
TRUE
FALSE
The greater the mass, the greater the inertia.
TRUE
FALSE
