In the diagram, I can tell that the light is moving into a (more/less) dense medium, due to the fact that it moves (away from/towards) the normal.
1
3.
State the formula for calculating wave speed.
1
4.
Name the main store of energy in a moving object
1
5.
A tennis ball contains 250J of energy stored kinetically. On contact with the ground, 200J is transferred to the elastic store. Calculate the amount of energy lost as heat:
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6.
Challenge: Calculate the frequency of a wave which is travelling at 12m/s with 1.5m between each crest.
New learning - checking for understanding
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7.
Which colour light is this object absorbing...
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8.
Which colour light is this object reflecting:
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9.
Which colour light is this object reflecting:
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10.
Which colour light is this object absorbing
LCWC - Knowledge checker
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11.
State the colours in visible light
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12.
What does a filter do?
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13.
Why do objects appear to be white?
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14.
Why do objects appear to be black?
LCWC - No peeking
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15.
State the colours in visible light
1
16.
What does a filter do?
1
17.
Why do objects appear to be white?
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18.
Why do objects appear to be black?
Recall quiz
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19.
A.Why does the shirt look blue?
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20.
Why do the shorts look white?
1
21.
Why do his shoes look black?
You do task
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22.
Explain why we see each of the following colours through the filters, in each example.
Plenary
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23.
A light ray is reflected. The angle of incidence is 45°, what is the angle of reflection?
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24.
What are the three other things that can happen to light waves when interacting with an object, apart from reflection?
1
25.
What do we call it when light changes speed and direction when moving from one medium to another?
