KS3 Science revision of light and sound
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Light travels in | straight lines
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| Light travels as a type of | electromagnetic radiation
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| Light travels at a speed that is | much faster than the speed of sound
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| The speed of light in a vacuum is | 300,000,000 m/s
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| A window is | transparent
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| The sun is | luminous
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| The moon is | shiny
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| Air is | transparent
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| Water is | translucent
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| A carpet is | opaque
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| What must be true about an object if it is going to cause shadows? | It is opaque - it must block some or all of the light falling on it
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| What fact about the way light travels explains why shadows are made? | Light travels forwards in straight lines
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| When a ray of light hits a surface what TWO things happen? | 1. Reflection of light
2. Transmission of light
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| Light from the sun and light bulbs is called? | White light
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| How many main colours are there making up sunlight? | Seven
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| How are different colours caused? | By light waves having different frequencies and wavelengths
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| How can light be split into its colours? | By using a prism
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| What is it called when light is split into its colours? | Dispersion
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| What is the pattern of colours called -scientific term? | A spectrum
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| What are the primary colours? | Red, green and blue
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
frauclooney
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