1) An astronaut in space does no exercise. This is most likely to affect his: a) skin b) heart c) teeth d) hair 2) Which of these shows the orbits of a planet (P) and a comet (C) around the Sun (S) a) A b) B c) C d) D 3) Which of these contains the largest number of stars? a) a comet b) a galaxy c) the Universe d) the Solar System 4) Which of these is a weight? a) 20 watts b) 20 joules c) 20 kilograms d) 20 newtons 5) Our Moon has: a) an atmosphere b) a high temperature c) no gravity d) a planet to orbit 6) Which of these shows how the weights of objects vary with their masses on the Moon? a) A b) B c) C d) D 7) The first man on the Moon pushed down on the Moon with a force of 200N. The Moon pushed back on him with a force: a) of 0N b) less than 200N c) equal to 200N d) more than 200N 8) One day in 2004, a tsunami caused a lot of damage when it reached the coast. This shows us that: a) a tsunami carries energy b) a tsunami only travels during the day c) tsunamis were discovered in 2004 d) all damage to the coast is caused by tsunamis 9) The peaks of the tsunami arrived about one hour apart. The frequency, in Hz, of this tsunami is about: a) 1/3600 b) 1/100 c) 1 d) 3600 10) Too much ultraviolet light causes: a) deafness b) lung cancer c) brain tumours d) damage to eyes 11) Ultraviolet radiation is used to: a) toast bread b) make flourescent ink glow c) monitor rainflow d) measure the depth of the sea 12) In space, all types of electromagnetic waves: a) are longitudinal b) move at the same speed c) have the same frequency d) are absorbed by the vacuum 13) Visible, infrared and gamma radiation pass from the Sun to the Earth. Which row of the table is correct? a) A b) B c) C d) D 14) Compared to analogue signals, digital signals are better because: a) they travel faster b) they travel slower c) they are more affected by noise d) they are less affected by noise 15) Which of these shows a digital signal? a) A b) B c) C d) D

Space and Waves Quiz

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