Year 9 Science

Name the parts of a cell and what each does, tell a plant cell from an animal cell, and put the levels of organisation in order.

Name the main groups of microorganisms and say what they do for soil, food and crops.

Separate the living and non-living parts of a habitat, build a food chain, and name the three ways two organisms can live together.

Explain the three states of matter by how tightly their particles are held and how much space sits between them.

Tell an element from a compound from a mixture, and say which of them can be taken apart by physical means.

Name the solute and the solvent in a solution, tell a saturated solution from an unsaturated one, and say how temperature changes what will dissolve.

Trace a wind back to a difference in air pressure, and follow the chain from a rising column of warm air to a thunderstorm and a cyclone.

Calculate density from mass and volume, find the volume of an irregular solid by displacement, and say what heating does to density.

Sort forces by whether they need the objects to touch, read a spring balance, and keep weight and mass apart.

Work out pressure from a force and an area, and explain why the same force presses harder when it is spread over less of a surface.

Tell concave from convex for both mirrors and lenses, use the laws of reflection to find an angle, and say which of them gathers a beam and which spreads it.

Explain how a current makes a magnet and how it makes heat, and say what changes the strength of an electromagnet.