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Think about it. Energy transfer
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Remember what you have studied in this section and answer the questions: Which has more internal energy: a hot body or a cold body? Explain why. With a classmate, discuss why we can start a fire if we…
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Answer. Properties of matter: mass, volume and density
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Remember what you have studied in this section and answer the questions: What is mass? What is volume? What is density? What is matter? What two physical properties does matter have? How many kilograms…
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Experiment. Electromagnet
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Wrap a piece of copper wire around a steel nail and connect it to a battery so that electrical current flows through the wire. You have made a simple electromagnet. You can use your electromagnet to…
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Understanding the text (II) (PET)
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Now listen to the Dke talking about when he met the King. Choose the best answer. When did the Duke meet the King? At first, the Duke thought the King was What did the King think of life in the South?…
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Energy
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What is energy? Energy is the power that causes change in things. It also allows us to carry out work: Aeroplanes can fly because of the energy they get from fuel. Their engines burn this fuel. Plants…
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Look and answer. The salmon
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Look at the close-up of the salmon ova and sperm. Then answer the questions below. Where does fertilisation take place? Is it external or internal in salmon? What do the ova and sperm look like? How do…
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Speaking 01
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Oscar Wilde talks about the dreadful rumours and scandals involving Dorian, but he is never specific. He never mentions Dorian’s actual sins. Wilde does not set a limit to the reader’s imagination.…
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Check. Materials that conduct and insulate heat
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Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…
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Conjunctions - Understanding the text
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“I’M NOT DEAD, BUT MY LEG HURTS A LOT,” SAYS ANNE. In this sentence but is a conjunction. Conjunctions join different ideas in sentence. Complete each of the following sentences with one of the…
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Think about it. The nature of light
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Remember what you have studied in this section and answer the questions: Look at the diagram of electromagnetic waves. State what happens to the wavelength, frequency and energy as you go from left to…
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