Physics basics
Physics is a small set of rules that describe an enormous range of things. This course starts with units and motion and works up through energy, waves, electricity and heat.
What you'll learn
13 chapters, then the quiz
- 01What physics isModels that predict, not stories that explain.
- 02Units and measurementSeven base units and why they matter.
- 03Describing motionSpeed, velocity and acceleration.
- 04The laws of motionNewton in three lines.
- 05ForcesGravity, friction, tension and the normal force.
- 06Energy and workThe currency that is never spent.
- 07Momentum and collisionsMass in motion, and what survives a crash.
- 08WavesEnergy moving without matter moving.
- 09SoundPressure waves in a material.
- 10Light and opticsThe fastest thing there is.
- 11Electricity and magnetismCharge, current and the field between them.
- 12Heat and thermodynamicsTemperature, transfer and the arrow of time.
- 13Modern physicsWhere the everyday rules break.
More science tests
See all →- Easy
The human body
Organs, systems and what each part is actually doing.
8 questions6 min - Medium
Space and astronomy
The solar system, the scale of it, and the forces holding it together.
8 questions7 min - Medium
Engineering basics
Loads, materials, mechanisms and circuits, and the habit of designing for failure.
8 questions7 min