8G Quick Quiz
1 The best way to describe a rock is:
A one chemical.
B a mixture of different minerals.
C one compound.
D a mixture of different elements.
2 In science, the texture of a rock is:
A the way it feels.
B whether it is hard or crumbly.
C its colour.
D the size and shape of the grains.
3 Which statement is true?
A Granite is made from interlocking crystals.
B Sandstone is made from interlocking crystals.
C Granite is made from rounded grains with gaps between them.
D Sandstone is made from rounded grains with no gaps between them.
4 Some rocks are porous because:
A the rock dissolves in water.
B water can get into gaps between the grains.
C animals have dug burrows in the rock.
D the rock is made of interlocking crystals.
1 Rocks are weathered when:
A it is windy.
B they get very hot.
C parts of the rock are worn away.
D they are sheltered from the wind.
2 Rainwater is:
A acidic, because it contains dissolved gases.
B alkaline, because it contains dissolved gases.
C acidic, because it contains dissolved salts.
D alkaline, because it contains dissolved salts.
3 Which of these things does not happen when limestone is weathered?
A Water runs over the rock without affecting it.
B Cracks in the limestone get bigger.
C Rainwater reacts with chemicals in the limestone.
D Water runs through cracks in the limestone.
4 Which statement is true?
A Granite is weathered more quickly than limestone.
B Rainwater does not react with any of the minerals in granite.
C Rainwater reacts slowly with the minerals in granite.
D Rainwater dissolves the minerals in granite.
1 Physical weathering happens to rocks when:
A the weather is always hot.
B the weather keeps changing between hot and cold.
C the weather is always cold.
D the rock gets struck by lightning.
2 Freeze–thaw action damages rocks because:
A the rocks melt.
B rocks try not to freeze.
C water expands when it thaws.
D water expands when it freezes.
3 Which kind of weather is most likely to cause freeze–thaw action?
A Dry, warm weather.
B Dry, cold weather.
C Wet weather, when it is cold enough for water to stay frozen.
D Wet weather, when it only gets cold enough to freeze at night.
4 Which of these statements is true?
A Chemical weathering always involves water.
B Physical weathering always involves water.
C Chemical weathering depends on temperature changes.
D Physical weathering happens because rainwater is slightly acidic.
1 Sediment is:
A rocks that have been dissolved by weathering.
B very small fragments of rock which float on the surface of water.
C pieces of rock which are too large to move.
D bits of rock which get deposited by rivers and seas.
2 Which statement is true?
A Slow moving water can carry quite large pieces of rock.
B Slow moving water cannot carry any pieces of rock.
C Fast moving water can carry quite large pieces of rock.
D Fast moving water can only carry very tiny pieces of rock.
3 What happens to pieces of rock when they are transported?
B They get bigger.
C They get smaller.
D They dissolve.
4 Sediment is deposited when:
A flowing water speeds up.
B flowing water slows down.
C the weather gets warmer.
D the weather gets cooler.
1 Sediment sometimes forms in layers because:
A rivers do not always transport the same kinds of sediment.
B rivers always transport the same kinds of sediment.
C layers look nice.
D rivers only transport small grains of sediment.
2 Layers of sediment can be formed from salty water when:
A rivers flow into the sea.
B it rains.
C the water evaporates and leaves the salt behind.
D the water evaporates and carries the salt away with it.
3 All fossils are:
A skeletons of animals.
B different layers of sediment.
C very old animals.
D the remains of dead animals or plants trapped in sediments.
4 Which statement is not true?
A Coal was formed from the remains of plants.
B Coal was formed from the remains of dead sea animals.
C Oil was formed from the remains of microscopic sea organisms.
D Natural gas was formed from the remains of microscopic sea organisms.