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Groovy lava lamp
Get ready for some bubble trouble with this funky science experiment!
Make it you’ll t a h W need lid l Clear jar with a l Water l Glitter l Food colouring lt Sa l Vegetable oil l d ol An l ht lig l Flash newspaper
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Volcanic quiz!
St a r t here! 1
Place the newspaper on a flat surface to soak up any spillages. Then, carefully fill your jar three quarters full with water.
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Next, slowly add a few drops of food colouring until the water becomes the colour you’d like. Don’t go wild – a few drops go a long way!
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Sprinkle in some glitter for extra sparkle and then fill the jar almost to the top with vegetable oil. Allow the mixture to separate.
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Now, pour a little salt into the jar until you see the cool lava-lamp effect! When the bubbles stop, add more salt to see it again!
How does it work?
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To watch your fantastic lava lamp really glow, try shining a flashlight behind the jar. It’s totally awesome!
The secret behind the lamp’s ‘lava’ is science. Oil is lighter, or less dense, than water, so it rises to the surface. Salt is heavier, or more dense, than water, and so it sinks to the bottom. When you add the salt, blobs of oil attach to the grains and sink. Then the salt dissolves, and the oil returns to the top. The result? A liquid show for the eyes. Cool!
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Which volcano buried the Roman city of Pompeii in AD 79? a) Mont Blanc b) Mount Vesuvius c) Mount Rushmore Where is the world’s tallest volcano? a) Holland b) Hungary c) Hawaii Can you unscramble the name of this famous volcano? rkatoaka
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