Which force is exerted by a surface when it rubs against another surface?
  • Friction
  • Gravity
  • Newtons
  • Forcemeter
What do we call a push or a pull upon an object which is caused by another object?
  • A particle
  • A wave
  • A force
  • An energy
What do we call a material which allows heat or electricity to pass through it?
  • An insulator
  • A circuit
  • A conductor
  • A thermometer
What do we call friction that is caused by air or water?
  • Newton
  • Temperature
  • Gravity
  • Resistance
Which word describes the 'highness' or 'lowness' of a sound?
  • Vibration
  • Pitch
  • Transmission
  • Tune
Which force pulls everything towards the center of the Earth?
  • Magnetism
  • Gravity
  • Air resistance
  • Friction
Which force is caused by the pull of gravity on an object?
  • Weight
  • Mass
  • Air resistance
  • Volume
Which word means to bounce off a surface, without being absorbed?
  • Vibrate
  • Deflect
  • Traverse
  • Reflect
Which of these words means to spin on an axis?
  • Evolve
  • Rotate
  • Orbit
  • Attract
What do we call something which produces its own light?
  • A wave
  • A ray
  • A producer
  • A light source
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