1. The instrument used to measure the temperature of a human body is called 1.an endoscope 2.an ohmmeter 3.an oscilloscope 4.a stethoscope 5.a thermometer

2. Which one of the following radiations is used in a laser? 1.Gamma rays 2.X-rays 3.Visible light 4.Microwaves 5.Radio waves

3. The activity of a radioactive source is measured in 1.becquerels 2.watts 3.coulombs 4.joules 5.sieverts

4. Gamma radiation is used in hospitals to sterilise instruments. This is because gamma radiation 1.makes the instruments radioactive 2.increases the temperature of the instruments 3.reduces the temperature of the instruments 4.destroys any living cells on the instruments 5.makes the instruments glow in the dark.

5. Which of the following is a use for ultrasound in medicine? 1.Correcting eye defects such as a detached retina 2.Killing cancerous cells 3.Producing an image of an unborn baby 4.Removing “port wine” birth marks 5.Sterilising medical instruments

6. The card covers which shape of glass? 1.Concave lens 2.Convex lens 3.Prism 4.Rectangular block 5.Semi-circular block

7. Sounds can travel through 1.A vacuum 2.Solids only 3.Liquids only 4.Gases only 5.Solids, liquids and gases.

8. The instrument used to detect sounds produced within the human body is called 1.An oscilloscope 2.An endoscope 3.A stethoscope 4.A thermogram 5.A spectroscope

9. Which of the following particles are in orbit around the nucleus of an atom? 1.Electrons only 2.Protons only 3.Electrons and protons 4.Protons and neutrons 5.Protons, neutrons and electrons

10. A ray of light changes direction as it travels from air into water. This effect is called 1.Diffraction 2.Diffusion 3.Incidence 4.Refraction 5.Reflection

11. Which of the radiations alpha, beta or gamma would be stopped by a sheet of aluminium 5mm thick? 1.Alpha only 2.Beta only 3.Gamma only 4.Alpha and beta only 5.Beta and gamma only

12. The nucleus of a uranium atom contains 1.electrons only 2.neutrons only 3.electrons and protons only 4.protons and neutrons only 5.electrons, protons and neutrons

13. What is the unit of equivalent dose? 1.becquerel 2.joule 3.kilogram 4.sievert 5.watt

14. The diagram shows a ray of light reflected from a plane mirror. Which of the labelled angles is the angle of relection? 1.A 2.B 3.C 4.D 5.E Aplane mirror E D C B

15. Which of the following radiations is used to detect broken bones? 1.Gamma rays 2.Infrared rays 3.Light rays 4.Ultraviolet rays 5.X-rays

16. Skin cancer is most likely to be caused by excessive exposure to 1.radio waves 2.microwaves 3.infrared radiation 4.visible light 5.ultraviolet radiation

17. Which entry gives the correct units used for dose equivalent and the activity of a radioactive source? dose equivalent activity of a radioactive source 1becquerelcounts per second 2 becquerel 3sievertbecquerel 4sievertcounts per second 5becquerelsievert

18. What is the name of the glass shape used to split white light into different colours? 1.Concave lens 2.Convex lens 3.Prism 4.Rectangular block 5.Semi-circular block

19. In a solid metal conductor, the current is a flow of 1.electrons 2.protons 3.neutrons 4.protons and electrons 5.Protons and neutrons

20. Which of the following shows the correct path of a ray of light passing through air and into a block of glass 1. 4. 2. 5. 3.

21. The diagram shows how radiations X and Y from a radioactive source are affected when materials are placed in front of the source. Which of the following correctly names both radiations? Radiation XRadiation Y 1alphabeta 2alphagamma 3betagamma 4betaalpha 5gammabeta source paper X Y 2mm aluminium2cm lead