Term
| What is the speed of light? |
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Definition
| 3,000,000,000 m/s
or
300,000 km/s |
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Term
| How long does it take for light from the Sun to reach the Earth? |
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Definition
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Term
| During a storm will you hear thunder or see lightning first? |
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Definition
| You'll see lightning
Light travels much faster than sound |
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Term
| Rays of light always travel in ... |
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Definition
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Term
| A material that lets light through and enables you to clearly see objects through it is ... |
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Definition
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Term
| A material that lets some light through but doesn't let you see objects clearly is ... |
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Definition
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Term
| A material that doesn't let light through is ... |
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Definition
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Term
| When light 'bounces off' an object it is said to have been ... |
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Definition
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Term
| Light that gets through a material such as glass is said to have been ... |
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Definition
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Term
| Light that gets stopped inside a material is said to have been ... |
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Definition
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Term
| Objects such as the Sun or a light that produce their own light are said to be ... |
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Definition
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Term
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Definition
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Term
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Definition
No
It does not produce its own light, it has been reflected from the Sun |
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Term
| Light is reflected from a plane surface, such as a mirror, at ... |
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Definition
| the same angle at which it hits it |
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Term
| Objects viewed in a mirror are said to have been ... |
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Definition
| laterally inverted - turned back to front |
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Term
| The relationship of the angle between mirrors (A) to the number of images (N) is ... |
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Definition
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Term
| The 'bending' of light when it passes from air into water or glass is called ... |
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Definition
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Term
| When light moves from a less dense material such as air into a denser medium such as water, how does it bend? |
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Definition
| Towards the normal (inwards) |
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Term
| The imaginary (often shown as dotted) line at right angles to a flat surface is called the .... |
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Definition
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Term
| When a light ray travels from air to glass, the angle of refraction is ... |
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Definition
| smaller than the angle of incidence |
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Term
| White light can be split into what different colours? |
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Definition
| Red, Orange, Yellow, Green, Blue, Indigo, Violet |
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Term
| What is the rhyme used to remember the order of colours when white light is split? |
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Definition
| Richard Of York Gave Battle In Vain |
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Term
| The effect of splitting white light into different colours is called ... |
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Definition
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Term
| The glass shape used to split light is called a ... |
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Definition
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Term
| The range of colours produced when white light is split is called a ... |
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Definition
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Term
| Coloured filters only allow light of certain colours through. The others are ... |
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Definition
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Term
| Light rays hitting a mirror are called ... |
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Definition
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Term
| Light rays that have bounced off a mirror are called ... |
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Definition
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Term
| The angle at which light is reflected is called the ... |
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Definition
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Term
| The angle at which light hits a mirror is called the ... |
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Definition
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Term
| The angle of incidence = ? |
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Definition
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Term
| What effect explains why water always looks shallower than it is? |
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Definition
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Term
| What effect explains why it is hard to tell where an underwater object really is? |
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Definition
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Term
| What effect explains why a pencil in a glass of water looks bent? |
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Definition
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Term
| The three colours, red, green and blue are called ... |
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Definition
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Term
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Definition
| Pieces of plastic or glass which only let some colours through
e.g. a red filter lets red light through, but absorbs green and blue |
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Term
| A substance in which something, such as light, moves is called a ... |
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Definition
| medium
e.g. glass is a medium in which light can travel
(plural, media) |
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Term
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Definition
| To bend a ray of light at the point where it enters or leaves water or glass etc. at an angle
{from re- + Latin 'fractum' = broken} |
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Term
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Definition
| A triangular glass block that breaks up light into the colours of a rainbow
{plural, prisms}
{adjective, prismatic} |
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Term
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Definition
1.The bands of colours seen in a rainbow
2. A wide range of things, ideas etc.
(plural, spectra) {Latin = image} |
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Term
| What does 'dispersion' mean? |
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Definition
| To scatter light
{from Latin 'dispersum' = scattered} |
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