waves

Waves

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Heat

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Waves 2

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Buoyancy

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Misc

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Category 1 questions follow

Quest

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Most of the waves in the electromagnetic spectrum a. Are Longitudinalb. Are Blue shift lightc. Are invisible

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invisible

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Quest

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Identify all waves that can travel through a vacuum.a. Lightb. Radioc. Soundd. X-rayse. Tv

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All but sound

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Quest

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Which letters indicate a node?

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D and B are nodesNodes are minimum amplitude

Antinodes are maximum amplitude points

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Quest

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What are basic differences between sound waves and electro-magnetic waves?

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Sound waves are longitudinal- Travel around 330 m/s (depending on temp)- Can not travel through a vacuum

- E-M waves- Are transverse- Travel at speed of light- Include radiowaves tv- NOT SOUND- Can travel through a vacuum

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Quest

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Which of the following is not true about sound waves?• Sound is a transverse wave• Sound can travel through a vacuum• Sound moves at right angles to the direction of

travel

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• Sound is a transverse wave FALSE

• Sound can travel through a vacuum FALSE

• Sound moves at right angles to the direction

of travel-TRUE

50Category 1

Category 2 questions follow

Quest

ion

Which is not correct?a. Sparklers don’t burn because there is very few

molecules to transfer the energyb. The energy in the sparkler molecules is very highc. The higher the temperature of the object, the

shorter the wavelengthd. Sparklers burn because there is a high

concentration of heat in the molecules and they should be outlawed.

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a. Sparklers don’t burn because there is very few molecules to transfer the energy

b. The energy in the sparkler molecules is very highc. The higher the temperature of the object, the

shorter the wavelengthd. Sparklers burn because there is a high

concentration of heat in the molecules and they should be outlawed. WRONG

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Quest

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A pot of hot water will cool to room temperature faster in a___ pota. Silverb. Whitec. black

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c. black

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Quest

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What is a Chinook Wind?

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Category 2 answer for 30 points

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Quest

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If water is in a phase change (boiling), what happens to the temperature of that water if the temperature is turned up?

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Nothing would happen to the temperature of the water. Temperature increase would cause a change

in phase, but as long as it is liquid water (not steam), the temp. does not change.

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Quest

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This is an example of a ______________

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Thermal Inversion

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Category 3 Waves questions follow

Quest

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A ____________ wave is produced when a wave source moves faster than the wave produced.

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Bow

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A wiggle in time is a _________________a. Waveb. Vibrationc. Transverse wave

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vibration

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Quest

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Why does a child standing in a swing make the swing have a shorter swing? (What 2 factors will affect the time of the swing?)

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It has a shortened length of the pendulum.(length & acceleration of gravity for the location)

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Quest

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Which of the following is not correctly matched?a. Transverse waves move at right angles to the

direction of wave travelb. Longitudinal wave moves along the direction of

wave travelc. Sound Waves- Longitudinal wavesd. Radio waves- sound waves

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Radio waves are electromagnetic waves, not Sound waves

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Quest

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Which is correct?Sound is fastest in a. Solids than in liquidsb. In warm air than in cold airc. In non-elastic materials

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All are correct

Sound is fastest in Solids than in liquids

Sound is fastest in

In warm air than in cold air

Sound is fastest in non-elastic materials

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Category 4 Buoyancyquestions follow

Quest

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An elephant steps into a ship and displaces an additional 30 tons of water. How much does the elephant weigh?

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30 tons.An object will displace the same exact weight of water

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Quest

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If the ice in a glass of tea melts, the level of the fluid in the glass willa. Riseb. Fallc. Stay the same

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Remains the same

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Quest

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A balloon will a. displace a volume of air equal to the weight of air

the balloon displacesb. Will rise until the air pressure inside the balloon

equals the pressure outsidec. Both above are correctd. None are correct

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C

Both a and b

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When an object is partly or wholly immersed in a liquid, it is buoyed up by ______________

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by a force equal to the weight of liquid displaced.

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Where will the swimmer have least buoyancy?a. On the surface of the waterb. At mid-level in the waterc. At the bottom

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On the surfaceThe totally submerged, anywhere would

have more force touching all points

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Category 5 MISCquestions follow

Quest

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What is the main difference between how gases and plasma affect electrical current?

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Plasma can conduct electric current

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Quest

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What happens when matter and anti-matter come together? (What is the result?)

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An equal amount of matter & antimatter would be annihilated and turned into pure energy

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Quest

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Explain how a hurricane removes the roof on a house.

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The faster a fluid (air) moves, the less its internal pressure. The fast winds lift the roof off

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Quest

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Which of these are NOT correcta. Facts can changeb. A sack of large potatoes will produce more peelings

than a sack of small potatoesc. Evaporation is a cooling process because the more

energetic particles escaped. Condensation warms an area because it transfers

energy to the surroundings as the molecules slow down

e. A cup of cocoa has a lower temperature, and a higher internal energy than a 100 lb. ice sculpture.

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a. Facts can change TRUE- as new info is gainedb. A sack of large potatoes will produce more

peelings than a sack of small potatoes FALSE- lessc. Evaporation is a cooling process because the

more energetic particles escape TRUEd. Condensation warms an area because it transfers

energy to the surroundings as the molecules slow down TRUE

e. A cup of cocoa has a lower temperature, and a higher internal energy than a 100 lb. ice sculpture. FALSE

40Category 5

Quest

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What force holds an atom together?

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Electrical

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