Introduction - 3.Quiz time.(4m) Introduction - 3.Quiz time.(4m) Choose the correct Choose the correct answers to the quiz in Part 1. Then listen and check your answers to the quiz in Part 1. Then listen and check your answers.answers. 1.1. Water Water exists asexists as a solid, a liquid and a gas. a solid, a liquid and a gas.2.2. When you heat a metal, it When you heat a metal, it expandexpands.s.3.3. Steel is Steel is a mixture ofa mixture of iron and other iron and other substancesubstances.s.4.4. Two-thirds ofTwo-thirds of the earth’s surface the earth’s surface isis water. water.5.5. The The distancedistance of the sun from the earth is of the sun from the earth is 150,500,500 kilometres. 150,500,500 kilometres. 6.6. The earth is 4.6 billion years old.The earth is 4.6 billion years old.7.7. The earth is forty-nineThe earth is forty-nine times larger than times larger than the moon. the moon.Answers:Answers: Introduction – 4.Classification(2m) Introduction – 4.Classification(2m) Put the words Put the words in pairs or groups.in pairs or groups.contract air earthcontract air earth gas liquid oxygen gas liquid oxygenmoon solid moon solid expand sunmoon solid moon solid expand suncontract air earthcontract air earth gas liquid oxygen gas liquid oxygenmoon solid moon solid expand sunmoon solid moon solid expand sun11223344air – gas - oxygenair – gas - oxygencontract - expandcontract - expandearth – sun - moonearth – sun - moongas – liquid - solidgas – liquid - solidIntroduction – 5.Classification(2m) Introduction – 5.Classification(2m) Put words in Put words in the right place.the right place.electricityelectricity iron iron metal metal steel steel air air glassglasselectricityelectricity iro...
