Year 9 Task 3 Science Questions Booklet  More Resources 

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Year 9 Science Task 3 Year 9 Science Task 3 • • Do not write on this question paper. Write all your answers in the answer booklet. Multiple Choice 1. When a fast-moving star is moving away from the Earth, the spectrum will be shifted towards the (A) blue end of the spectrum (B) green end of the spectrum (C) yellow end of the spectrum (D) red end of the spectrum 2. Approximately how many years ago is the big bang thought to have occurred? (A) 13 thousand (B) 13 million (C) 13 billion (D) 13 trillion 3. A pulsar is (A) a radio wave that comes from a star (B) a type of galaxy (C) a rapidly rotating neutron star (D) a galaxy whose centre is so bright it obscures the outer regions 4. The universe expanding from a super-dense and super-hot singularity is known as (A) the Doppler effect (B) Hubble’s Law (C) Einstein’s equation (D) the ‘big bang’ theory RL 1/3 17/10/2008 Year 9 Science Task 3 5. What is the name of the solution represented by the formula HCl? (A) Hydrochloric acid (C) Sulfur hydroxide (B) Hydrogen chlorine (D) Sulfuric acid 6. Which of the following is an example of a chemical reaction? (A) Ice Melting (C) Magnesium Burning (B) Water Boiling (D) Acid Freezing 7. Chemical reaction that releases energy and increases temperature is known as? (A) Exothermic (C) Hotathermic (B) Endothermic (D) Upperthermic 8. Complete this sentence: “In an ionic bond, electrons “ (A) disappear (C) are Shared (B) are Formed (D) are Swapped 9. Which of the following are all types of stars? (A) White Dwarf, Red Giant, Twinkle (B) Red Supergiant, White Dwarf, Pulsar (C) Red Dwarf, Andre Giant, Black Hole (D) Supernova, Nebula, Yellow Shine 10. When a star moves away from Earth we call this effect a Red Shift. This is because (A) The star appears red in colour (B) The star is every colour except red (C) The star heats up (D) The star reacts faster Single Word Answer 11. An atomic nucleus is made up of protons and ...................................... 12. A chemical reaction which absorbs heat is called an ...................................... reaction. 13. A combustion reaction always has ...................................... as one of its reactants. 14. The number of waves passing a certain point in each second is called the ...................................... 15. Our galaxy is called the ...................................... galaxy. RL 2/3 17/10/2008 Year 9 Science Task 3 RL 3/3 17/10/2008