Science

1. tiny structures inside cells, where aerobic respiration happens, releasing energy from glucose
3. air - Air that is breathed in
7. A liquid in which other substances will dissolve
8. forces or moments are unbalanced if their effects add together or are opposite but do not completely cancel out
10. A solution in which no more solid will dissolve
12. variable- The factor that changes in an investigation as a result of changing the independent variable
13. Of a muscle: get shorter
15. the tube that carries air from the back of the mouth, down through the neck towards the lungs.
16. A substance that is dissolved

2. The random movement of particles from an area where they are in high concentration to an area where they are in lower concentration
4. variable- the factor that is changed by the experimenter in an investigation
5. Of a muscle: Stop contracting
6. variables- Factors that are kept the same in an investigation so that the test is fair
9. not moving
11. speed- calculated as distance travelled/time taken
14. respiration - chemical reactions inside cells, where oxygen is used to break down glucose and release energy.