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Energy transfer
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The change in particles happens due to ( cooling - heating ) of matter.
heating
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In Radiation, heat moves as ................................
waves
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Fire & sun are examples of heat transfer by ........................
Radiation
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The picture shows the particles of (carbon dioxide - shoes - milk)
Carbon dioxide
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Anything that gives heat has light energy. (True / False)
Fslae
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Any source of light has ........................... energy.
Light
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Smart board is made of ................................. that are always moving.
particles
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Particles move (faster - slower) when cooled.
slower
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Which of the following is a natural source of light? ( moon - candles - flashlight - firefly)
firefly
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when heating food, its particles move .......................... & ............................. each other.
faster - away from
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(giraffe - jellyfish - lion) can generate its own light.
jellyfish
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Heat moves only by radiation. (True - false)
False
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Particles move (faster - slower) when heated.
faster
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When heat transfer from a far source of heat, it moves by ( Conduction - Convection - Radiation)
Radiation
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Jelly fish can generate its own light, so jelly fish is a (natural - man made) light source.
natural
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Light energy travels in ...........................
waves
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How is heat energy move? From hot to cold - from cold to hot - Heat doesn't move
From hot to cold
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Which of the following is a man-made source of light? ( stars - Sun - laptop - lightening)
laptop
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