Question types

Start with

Question limit

of 14 available terms

Print test

5 Written questions

5 Multiple choice questions

  1. essential to life, plants need it to produce food & animals give it off as a waste product
  2. makes conditions on Earth suitable for living things
  3. release carbon dioxide when burned
  4. makes up 78% of the gases in dry air
  5. necessary for a fire to burn

4 True/False questions

  1. laboratoriesa place pure air is found


  2. oxygenmakes up 21% of the gases in dry air


  3. greenhouse effectthe trapping of heat by the gases in the atmosphere


  4. water vaporwater in the form of gas