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 Light 40 Flashcards |
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What are luminous objects known for? |
Card: 1 / 40 |
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Producing their own light. |
Card: 2 / 40 |
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Fill in the blank: ______ are human-made devices that produce light. |
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Artificial sources of light |
Card: 4 / 40 |
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True or False: The moon produces its own light. |
Card: 5 / 40 |
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False. The moon reflects sunlight and does not produce its own light. |
Card: 6 / 40 |
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What is the speed of light in a vacuum? |
Card: 7 / 40 |
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3 x 10⁸ m/s |
Card: 8 / 40 |
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Riddle: I can bend light and create a rainbow, what am I? |
Card: 9 / 40 |
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A glass prism |
Card: 10 / 40 |
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Which of the following is a natural source of light? A) Electric bulb B) Candle C) Tube light D) Laser |
Card: 11 / 40 |
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B) Candle |
Card: 12 / 40 |
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Fill in the blank: ______ materials block all light from passing through. |
Card: 13 / 40 |
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Opaque |
Card: 14 / 40 |
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True or False: Shadows can be formed by transparent objects. |
Card: 15 / 40 |
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False. Transparent objects do not form shadows because light passes through them completely. |
Card: 16 / 40 |
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What is the term for when light bounces back after hitting a surface? |
Card: 17 / 40 |
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Reflection |
Card: 18 / 40 |
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Riddle: I am there when light is blocked, forming a dark shape. What am I? |
Card: 19 / 40 |
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A shadow |
Card: 20 / 40 |
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Which of the following allows only a small amount of light to pass through? A) Glass B) Wood C) Butter paper D) Clear water |
Card: 21 / 40 |
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C) Butter paper |
Card: 22 / 40 |
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Fill in the blank: The process of light bending when passing through a material is called ______. |
Card: 23 / 40 |
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Refraction |
Card: 24 / 40 |
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True or False: The sun is an artificial source of light. |
Card: 25 / 40 |
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False. The sun is a natural source of light. |
Card: 26 / 40 |
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What type of materials allow light to pass through easily? |
Card: 27 / 40 |
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Transparent materials |
Card: 28 / 40 |
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Riddle: I can only be seen when light shines on me, I am not bright. What am I? |
Card: 29 / 40 |
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A non-luminous object |
Card: 30 / 40 |
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Fill in the blank: Shadows are longest in the ______ and ______. |
Card: 31 / 40 |
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Morning, evening |
Card: 32 / 40 |
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Which of the following produces light? A) Trees B) Glass C) Fireflies D) Chairs |
Card: 33 / 40 |
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C) Fireflies |
Card: 34 / 40 |
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What happens to the length of a shadow when the sun is directly overhead? |
Card: 35 / 40 |
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The shadow is shortest. |
Card: 36 / 40 |
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True or False: Opaque objects create faint shadows. |
Card: 37 / 40 |
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False. Opaque objects create dark shadows. |
Card: 38 / 40 |
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What do we call materials that allow only a small amount of light to pass through? |
Card: 39 / 40 |
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Translucent materials |
Card: 40 / 40 |
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Completed! Keep practicing to master all of them. |
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