Study

Science

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  • What are these?
    Kidneys
  • Dissolving salt in water is _________ change. ( reversible or irreversible )
    reversible
  • Why is electrical wiring usually made from copper? ( Because copper insulates electricity / Because copper conducts electricity )
    Because copper conducts electricity.
  • Which organ is responsible for sending blood all over the body?
    the heart
  • What is the name of this system?
    Digestive system
  • What is a circuit with several paths for electricity to flow? (open circuit / series circuit / parallel circuit )
    parallel circuit
  • If an object has more mass, it will ______. ( weigh more / weigh less )
    weigh more
  • The amount of matter in a object is ______ . ( pressure / force / mass )
    mass
  • What is the function of the liver? ( to breathe or to remove toxins from the blood )
    Yay! ( to remove toxins from the blood )
  • Mixing and dissolving are examples of reversible change. ( True / False )
    True
  • Choose the answers that respond to a chemical change. ( making a cake / Fireworks / Chopping onions )
    Making a cake / Fireworks
  • Matter can exist in different states : ______ , _______ or _______ .
    solid, liquid , gas
  • What is the name of this body system?
    Nervous system
  • Is an elastic band conductor or insulator?
    insulator
  • Evaporation happens when a liquid is _________ .
    heated
  • Choose the answers that respond to a physical change. ( Burning wood / melting ice / rotten bananas )
    Melting ice
  • Why is electrical wiring usually covered with a layer of plastic? ( To make it look pretty / To add more energy / To make it safe )
    To make it safe
  • Fireworks exploding in the sky undergo a physical change. ( True / False )
    False
  • When we heat up matter and change it from liquid to gas, this is called ________ .
    evaporation
  • Which of the following can work as an energy source? ( Wire / Light bulb / Battery )
    Battery
  • Set up _______________ areas to protect habitats.
    conservation
  • The resources come from the ___________ to make all the things we use on a daily basis.
    Earth