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Energy & materials

Energy & materials

• Why do some balloons float and others don't?
  
  
• What are crayons made of?
  
  
• Where do diamonds come from?
  
  
• Why is fire hot?
  
  
• How does glue make things stick together?
  
  
• Where does gold come from?
  
  
• How are pearls made?
  
  
• Where does plastic come from?
  
  
• What is recycling?
  
  
• Where does silver come from?
  
  
• How does soap make things clean?
  
  
• Why does soap taste bad?
  
  
• Why do I sometimes get a “shock” from touching the doorknob?
  
  
• Why is tape sticky?
  
  
• Why do balls bounce?
  
  
• Why is soap so slippery?
  
  
• Why is my reflection upside-down when I look in a spoon?
  
  
• Why do bubbles pop so easily?
  
  
• How do pencil erasers work?
  
  
• How do mirrors work?
  
  
• How is glass made?
  
  
• How is rubber made?
  
  
• What is dust?
  
  
• Why do balloons pop?
  
  
• How does an echo work?
  
  
• Why does wood float?
  
  
• How do matches work?
  
  
• Why doesn't glue stick to the bottle?
  
  
• How is aluminum foil made?
  
  
• Why do markers smell bad?
  
  
• Why does wood burn?
  
  
• Why do candles burn out?
  
  
• How do light bulbs work?
  
  
• What is helium?
  
  
• What is a gas?
  
  
• What is an element?
  
  
• How does a pencil sharpener work?
  
  
• Why should I unplug appliances when I'm not using them?
  
  
• Why is concrete so heavy?
  
  
• What is electricity?
  
  
• What is friction?
  
  
• How do batteries work?
  
  
• How do scissors work?
  
  
• What is chemistry?
  
  
• Why are reflections backwards?
  
  
• How are pencils made?
  
  
• What is texture?
  
  
• Where do dust bunnies come from?
  
  
• What is crystal?
  
  
• How does a glow stick work?
  
  
• What is a calorie?
  
  
• How do fireworks work?
  
  
• What is Iron?
  
  
• How does a magnet work?
  
  
• How is fabric made?
  
  
• Where does petroleum come from?
  
  
• How does Velcro work?
  
  
• Why do we slip?
  
  
• Why do dark colors absorb heat?
  
  
• How do kites work?
  
  
• What is porcelain made of?
  
  
• Where does copper come from?
  
  
• What is a molecule?
  
  
• What is energy?