It's a song to help pupils remember the order of planets.
Thursday, 3 November 2011
Wednesday, 2 November 2011
Science Project(4)~~ make the rainbow
Introduction:
Sunlight or electric light is called 'white light', because it appears to be colourless. The reality is that 'white light' is made up of a mixture of different colours called a 'spectrum', when broken up. These colours can be observed when white light passes through a transparent substance, such as water or glass. A 'spectrum' consists of the seven colours of the rainbow: red, orange, yellow, green, blue and violet – as well as two other invisible colours called: ultra-violet and infra-red. Isaac Newton used a 'prism' to split up white light into different colours. In this science experiment we will use water and a mirror to do the same.
Materials:
LARGE, DEEP TRAY
WHITE CARDBOARD
MIRROR
TAP WATER
Procedure:
1. Fill a large, deep tray with some water and place it up against a wall outside on a sunny day. Position the tray so that the sunlight falls onto the mirror.
2. Rest a flat mirror upright against the inside, so that it is supported by the wall if necessary.
3. Hold a sheet of white cardboard in front of the mirror and move it around until a rainbow of colours appears on it! You might have to adjust the position of the mirror and the cardboard several times to get the best results.
Sunlight or electric light is called 'white light', because it appears to be colourless. The reality is that 'white light' is made up of a mixture of different colours called a 'spectrum', when broken up. These colours can be observed when white light passes through a transparent substance, such as water or glass. A 'spectrum' consists of the seven colours of the rainbow: red, orange, yellow, green, blue and violet – as well as two other invisible colours called: ultra-violet and infra-red. Isaac Newton used a 'prism' to split up white light into different colours. In this science experiment we will use water and a mirror to do the same.
Materials:
LARGE, DEEP TRAY
WHITE CARDBOARD
MIRROR
TAP WATER
Procedure:
1. Fill a large, deep tray with some water and place it up against a wall outside on a sunny day. Position the tray so that the sunlight falls onto the mirror.
2. Rest a flat mirror upright against the inside, so that it is supported by the wall if necessary.
3. Hold a sheet of white cardboard in front of the mirror and move it around until a rainbow of colours appears on it! You might have to adjust the position of the mirror and the cardboard several times to get the best results.
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