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OCR STAGED ASSESSMENT

OCR STAGED ASSESSMENT. Module PD1 Practice Questions. This question is about sound and ultrasound. (a) Captain Booth sounds his siren. He is 600m from the cliffs. Look at the diagram. A few seconds later he hears an echo. Explain why. …………………………………………………………………………………………...

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OCR STAGED ASSESSMENT

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  1. OCR STAGED ASSESSMENT Module PD1 Practice Questions

  2. This question is about sound and ultrasound. (a) Captain Booth sounds his siren. He is 600m from the cliffs. Look at the diagram. A few seconds later he hears an echo. Explain why. …………………………………………………………………………………………... ………………………………………………………………………………………. [1] (b) (i) What is meant by ultrasound? …………………………………………………………………………………….. …………………………………………………………………………………….. ………………………………………………………………………………… [2] (ii) Ultrasound can be used for cleaning. Write down two other uses of ultrasound. 1. …………………………………………………………………………………. 2. …………………………………………………………………………..….. [2]

  3. This question is about the structure of the Earth. (a) The Earth is made up of layers. Describe the structure of the Earth. In your answer you should: ·name the layers ·state whether they are solid or liquid A diagram may help you answer this question. [6] (b) When earthquakes occur, p waves and s waves pass through the Earth. This helps scientists find out about the structure of the Earth. Describe the differences between p waves and s waves. [2]

  4. Look at the list of waves. gamma infrared microwaves radio waves sound waves ultraviolet visible light X-rays (a) Which wave is not part of the electromagnetic spectrum? ……………………………………………………………………………………….. [1] (b) (i) Which two waves can be used for cooking? Choose from the list. 1st wave …………………………………………………………………………… 2nd wave ……………………………………………………………………….. [2] (ii) Which wave is used to operate a TV remote control? Choose from the list ……………………………………………………………………………...….. [1] (iii) Ultraviolet waves can cause sunburn. What other effect do ultraviolet rays have on the body? …………………………………………………………………………………….. ………………………………………………………………………………… [1] (iv) Write down two types of wave that carry information. Choose from the list. 1st wave …………………………………………………………………………… 2nd wave ……………………………………………………………………….. [2] (v) Radio waves travel at 300 million metres each second, in space. How fast do light waves travel in space? …………………………………………..million metres per second. [1]

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