Atoms and earth test

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  • Created by: fam04
  • Created on: 12-03-14 20:16

1. why do the tectonic plates move?

  • becasue of convection currents in the mantle that are caused by radioactive decay
  • because of the world heating up
  • because of global warming
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Other questions in this quiz

2. There are about .... different elements from which all substances are made?

  • 2000
  • 100
  • 60
  • 50

3. what do compounds contain?

  • many elements
  • more than one element
  • two elements

4. Group 0 consists of the ... gases?

  • fluids
  • hot gases
  • noble gases
  • metals

5. What does the mass number mean ?

  • its the sum of the protons and neutrons in the nucleus of an atom
  • its how much the atom weighs
  • its the sum of electrons in an atom

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