TEMPERATURE

1. What is the best type of cup for keeping coffee warm? (14kb)
2. How quickly does frozen food thaw? (18kb)

PLANTS AND ANIMALS

1. Do living things give off heat? (16kb)
2. Does the time of day affect plant growth? (25kb)
3. How effective is an enzyme? (21kb)
4. Why do animals huddle? (17kb)

ENVIRONMENT

1. What conditions help make a good compost? (15kb)
2. When does a plant lose most water? (18kb)
3. Land and sea; how fast do they warm and cool? (17kb)

CHEMICAL REACTIONS AND MATERIALS

1. What is the best temperature for making beer or wine? (20kb)
2. How hot does plaster of Paris get when mixed? (20kb)
3. Rate of reaction (acid and thiosulphate) (16kb)

ELECTRICITY

1. Which battery is best? (16kb)

VIBRATIONS

1. How steady is a pendulum? (13kb)

MOTION AND SPEED

1. Record breakers (15kb)
2. Against the clock (16kb)
3. Reaction time and driving (22kb)

ACCELERATION

1. Runaway tractor (23kb)
2. Getting moving (17kb)
3. Living with friction (18kb)