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Middle School: 6th, 7th and 8th Grade
Science
Particles And Energy
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Q.1
Which of the following is true of the particles of a liquid?
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The particles of a liquid do not move
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They move very fast, much faster than the particles of a gas
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They are more tightly-packed than the particles of a solid
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They are not as tightly packed as a solid's particles, but do not move as freely as those of a gas
Q.2
Increasing the temperature causes particles to gain what?
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Speed
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Energy
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Mass
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Speed and energy
Q.3
Particles in which state of matter are tightly packed?
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Solid
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Liquid
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Gas
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All of the above
Q.4
Lowering the temperature of a substance causes its particles to do what?
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Speed up
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Maintain the same speed
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Slow down
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Stop moving
Q.5
Sound waves can cause which of these to vibrate?
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Particles of a solid
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Particles of a liquid
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Particles of a gas
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All of the above
Q.6
Sound waves travel fastest through which material?
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Solids
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Liquids
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Gases
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Sound waves don't change their speed
Q.7
What are light particles known as?
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Molecules
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Electrons
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Photons
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Neutrons
Q.8
What takes place when particles gain enough energy to escape the surface of a liquid?
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Condensation
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Evaporation
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Freezing
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Melting
Q.9
A vibrating object causes air particles to vibrate. These air particles cause other air particles to vibrate, which cause more air particles to vibrate. What is this movement of energy called?
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Sound waves
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Gravity
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Force
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Tidal waves
Q.10
Which state of matter has particles which move very fast?
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Solid
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Liquid
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Gas
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Solids and liquids
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