| Energy | Solids | Liquids | Gasses | Waves/Sounds |
|---|---|---|---|---|
|
T/F Force X Distance is work
True
|
What are crystals?
a) Diamonds b) Geometric shapes
b; Geometric shapes
|
T/F Buoyant force is a downward force
False; upward
|
T/F The air gets thicker the higher you go
False
|
What is a wave?
A wiggle in time and space
|
|
What is Power?
Rate at which work is being done.
|
How do you calculate density?
mass/volume
|
Define buoyancy
The apparent loss of weight of objects when submerged in a liquid
|
What instrument measures atmospheric pressure?
a) barometer b) thermometer c) laptops
a; barometer
|
What is vibration?
A wiggle in time
|
|
What is watt?
a)Joule per second b) Work c) Power
A; Joule per second
|
T/F Weight density is weight over distance
False. Weight/volume
|
Define pressure
The force per unit area on which the force acts
|
Name two layers of the atmosphere
Troposphere, stratosphere
|
T/F The bottom of the wave is called a crest
F; a trough
|
|
Explain Potential energy.
Energy that is stored and held in readiness
|
What is elastic limit?
Distance at which permanent distortion occurs.
|
What is the equation for pressure?
force/area
|
T/F You cannot drink a soda through the straw unless the atmosphere exerts a pressure on the surrounding liquid
True
|
What is frequency?
How often a vibration occurs
|
|
What is the equation for Kinetic energy?
1/2massXspeed^2
|
What is the difference between elastic and inelastic?
Elastic can be brought to its orginal shape. Inelastic is permanently deformed.
|
What is Archimedes' principal?
An immersed object buoyed up by a force equal to the weight of the fluid it displaces.
|
What is Bernoulli's Principle?
The greater the speed of flow, the less is the force of the water at right angles
|
What unit is frequency measured in?
Hertz
|
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