
Science Homework #3: Year 9
Science Homework: Year 9 (Mrs Downing)Why do some rocks have bigger crystals that others?How does an object gain gravitational potential energy?Combustion reactions are exothermic reactions. What does this mean?Describe what is meant by the ‘law of conservation of energy’.How do we test for the presence of water?Describe the process of photosynthesis. Use a word equation Read More …