1. Speed

2. Gravity

3. Contact forces

4. Pressure

1. Potential difference & Resistance

2. Current & Charge

3. Magnetism

4. Electromagnets

Coulomb train model by @emc2andallthat

1. Energy costs

2. Energy transfers

3. Work

4. Heating and cooling

1. Sound

2. Light

3. Wave effects

4. Wave properties

1. The night sky

2. The Solar System

3. The Earth

4. The moon & changing ideas