0.1 · Preface · Nature of physics
What is physics?
Matter, energy, and how they interact.
SL+HLEasier12 minFree
Hook
Everything you can touch, see, hear or feel is either stuff, or something stuff does. Which two words cover all of it?
The big idea
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Which has volume but no mass?
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Which unit belongs to energy?
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A wave is best described as…
Apply
In your own words, say what physics studies and give one example each of matter and energy.
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Summary card
Key points
- • Physics studies matter and energy and how they interact.
- • Matter has mass (kg) and volume (m³).
- • Energy is measured in J and travels as waves.
- • E = mc² and E = hf connect them.
Formulas
- E = mc²
- E = hf
Key terms
- Matter :
- has mass and takes up space
- Energy :
- measured in joules
- Wave :
- a disturbance that transfers energy
Common errors
- • Forgetting to square c in E = mc².
- • Mixing up kg (mass) and J (energy).
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