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Science 7 Final
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Loudness of sound (called intensity) is measured in these units.
decibels
T/F Sound energy travels faster than light energy.
False
Sound needs a medium (matter) to travel through. A medium that sound can travel through
all mediums
All sound waves begin with a
vibration
What kind of wave is this?
longitudinal
What kind of wave is this?
longitudinal
What kind of wave is this?
surface
What kind of wave is this?
transverse
If you have iron fillings in a mixture with water in it, what method could be used to separate the iron fillings from the mixture?
magnet
Why is salt no longer visible once you stop stirring it in water?
it's soluble
What is the property of oil that causes it to float on top of the water?
density
What is the type of energy when a ball is rolling down a hill?
kinetic
When two equal forces act in opposite directions on an object, they are called
balanced forces
. According to Newton's 2nd law of motion (f=ma), when you kick a soccer ball with more force it increases the balls...
acceleration
What is the force that is pulling down?
gravity
What are the units that are used to represent FORCE?
newtons
Which of the four substances below are a compound? CO si He Fe
CO
Which scientific model could be used to predict the properties of an element?
periodic table
The tiny particles that make up all matter are called
atoms
Liquid water changes to water vapor during which process?
dissovling
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