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Eighth Grade (Grade 8) Physics Questions

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Grade 8 :: Energy and Momentum by doliver701
Which situation is an example of increasing potential energy?
  1. a bicyclist stopping at a stop sign
  2. a cat jumping from a tree
  3. emptying a bucket of water
  4. pulling a wagon uphill
Grade 8 :: Heat Transfer by doliver701
Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot?
  1. The hot water causes a chemical reaction to take place in the spoon.
  2. The heat from the hot water is conducted to the spoon handle.
  3. The hot water heats the air surrounding the upper part of the spoon.
  4. The hot water causes a physical change in the spoon handle.
Grade 8 :: Matter by CaryBloomquist
A gas has
  1. a definite shape and volume.
  2. a definite shape, but no definite volume.
  3. no definite shape or volume.
  4. no definite shape, but a definite volume.
Grade 8 :: Forces and Motion by doliver701
Jeff was riding in a car. Which change demonstrates the GREATEST effect of inertia?
  1. The car makes a sudden stop.
  2. The car slows down gradually.
  3. The car changes into another lane.
  4. The car runs out of gas and rolls to a stop.
Grade 8 :: Waves and Sound by doliver701
All waves transmit
  1. energy.
  2. mass.
  3. matter.
  4. radiation
Grade 8 :: Matter by CaryBloomquist
Sublimation is a change from a
  1. solid to a liquid.
  2. gas to a liquid
  3. solid to a gas
  4. liquid to a solid
Grade 8 :: Waves and Sound by doliver701
In order for a fish to see a bug just above the surface of the water, light travels from the insect through the air and crosses into the water until it reaches the fishes' eye. Which statement is true regarding the light wave as it travels?
  1. It will bend as it hits the water because it slows down.
  2. It will bend as it hits the water because the water particles move slower than air.
  3. It will travel straight from the bug to the fishes' eye because that is the most direct path.
  4. It will travel straight from the bug to the fishes' eye because it will continue to travel at the speed of light.
Grade 8 :: Matter by CaryBloomquist
During a change of state, such as melting or freezing, a substance's temperature
  1. increases
  2. decreases
  3. remains constant
  4. increases during melting and decreases during freezing
Grade 8 :: Matter by CaryBloomquist
Vaporization that takes place inside a liquid is called
  1. evaporation
  2. boiling
  3. condensation
  4. sublimation
Grade 8 :: Light and Optics by jlovering
An object that transmits light with scattering can be described as:
  1. transparent
  2. translucent
  3. opaque
  4. none of the above
Grade 8 :: Light and Optics by jlovering
Which of the following is true about an apple that appears red?
  1. it absorbs red light and reflects all others
  2. it reflects red light and absorbs all others
  3. it transmits red light and reflects all others
  4. it reflects red light and transmits all others
Grade 8 :: Waves and Sound by jlovering
Which of the following would sound most likely travel fastest through?
  1. wooden table
  2. glass of water
  3. across an empty room
  4. in space
Grade 8 :: Light and Optics by jlovering
Grade 8 :: Forces and Motion by outom964
Grade 8 :: Heat Transfer by bluepanther
Which of the following is not a form of heat transfer?
  1. conduction
  2. convection
  3. transpiration
  4. radiation
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