Topic Summaries
Visible light
Energy and power
Renewable energy and efficiency
Charge, current, and electric fields
Potential difference and resistors
Electricity
Volume and gases
States of matter and heat capacity
Radiation
Nuclear fusion and fission
Forces
Velocity and acceleration
Gravity and Newton's Laws
Moments and elastic potential
Stopping, braking, and momentum
Properties of waves
Electromagnetic waves
Refraction and lenses
Light, colour, and ray diagrams
Absorbing and emitting infrared radiation
Magnetic fields
Motor effect, generator effect, and transformers
Science skills: Experimental procedures
Science skills: Presenting and using data
Science skills: Measuring results
Energy and power
Renewable energy and efficiency
Charge, current, and electric fields
Potential difference and resistors
Electricity
Volume and gases
States of matter and heat capacity
Radiation
Nuclear fusion and fission
Forces
Velocity and acceleration
Gravity and Newton's Laws
Moments and elastic potential
Stopping, braking, and momentum
Properties of waves
Electromagnetic waves
Refraction and lenses
Light, colour, and ray diagrams
Absorbing and emitting infrared radiation
Magnetic fields
Motor effect, generator effect, and transformers
Science skills: Experimental procedures
Science skills: Presenting and using data
Science skills: Measuring results
- Humans are only capable of seeing visible light.
- Visible light consists of a spectrum of different colours. Each colour corresponds to a small range of wavelengths. Red light has the longest wavelength and the lowest frequency. Violet light has the shortest wavelength and the highest frequency.
- Specular reflection is when light reflects off a smooth surface. Diffuse reflection is when light reflects at different angles off a rough surface
- Light reflects in a single direction in specular reflection to form a clear image, such as with a mirror.
- Light will scatter after diffuse reflection. We cannot see an image but can see the colour of the surface it reflected from.
- Transparent materials will allow visible light to pass through. Translucent materials will also allow light to pass through but objects can’t be as clearly seen through them (e.g. frosted glass).
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