Grade: 5 Science Olympiad Qualifier Set: 2

Transcription

1 Grade: 5 Science Olympiad Qualifier Set: Max Marks: 60 Test ID: Time Allotted : 40 Mins Instructions: Each question has four choices (A), (B), (C) and (D) out of which ONLY ONE is correct. Each question carries 2 Marks. There is no negative marking 1. To discover if water in a bottle is hot, you would use your sense of A. Smell B. taste C. touch D. hearing 2. A liter bottle (1) and a bowl (2) were filled with equal quantities of water. They were then exposed to the sun for four hours. What will the result be after four hours? A. Both containers will have the same amount of water B. Both containers will be empty C. Container (1) will have more water D. Container (2) will have more water 3. Use the information in the cartoon to answer the question. 1 2 The water was formed because Page 1 of 10

2 A. the heat of the flame affected the cold glass. B. all the oxygen was used up. C. water vapor was formed during combustion (burning). D. carbon dioxide was produced. 4. If we eat too much food with lots of energy each day, the energy may be stored as fat and we will gain mass. Look at the table below and then decide which two foods you should eat in small amounts. Type of food lettuce chips yoghurt pasta whole-wheat bread grilled chicken breast Energy (in kj) per 100g 20 kj 1022kJ 96kJ 752kJ 960 kj 670 J A. lettuce and grilled chicken breast B. pasta and yoghurt C. chips and pasta D. chips and whole wheat bread 5. The sketches below show different forms of energy. Choose one set of correct labels, from left to right, for these sketches. A. Heat; heat; heat; sound B. Light; light; light; sound C. Light; heat; solar; sound D. Electrical; heat, solar; sound 6. If two liquids have widely different boiling Points, they may be separated by- A. Steam distillation B. Decantation C. Evaporation D. Fractional distillation Page 2 of 10

3 7. Seed coat is not thin, membranous in A. Maize B. Coconut C. Groundnut D. Gram 8. The footprints of astronauts will be around for 100 million years, as they cannot be eroded by water, air or volcanic activity on the moon. A possible explanation for this would be: - A. The astronauts used shoes with deep markings. B. There is no water, air or volcanic activity on the moon. C. The moon does not move. D. Astronauts want to be remembered for being on the moon 9. Dolly went for a walk in the garden one morning. She saw droplets of water on the grass. She was confused because she did not see rain the day before. Which one of the following statements explains Dolly s findings? A. At night, the water vapor in the air touching the grass cools down and forms droplets of water known as dew. B. Dolly was asleep when the rain fell. C. Grass gives off water at night D. This is part of the water cycle. 10. Put the level of organization in order from smallest to largest. A. cells, tissues, organs and organ systems B. cells, organs, tissues and organ systems C. organ systems, organs tissues, and cells D. organs, tissues, cells and organ systems 11. Nancy and Sarah were studying friction and decided to do an experiment. They placed four equally sized blocks made of different materials on an elevated plastic tray. They watched the blocks move down the tray. Which block would experience the least amount of friction as it moved down the tray? Page 3 of 10

4 A. Ice Block B. Sponge Block C. Sandpaper Block D. Plastic Block 12. James is investigating the properties of several substances. He prepared a beaker containing substances J, K, and L and filtered the contents through a funnel into a flask, as shown below. What term best describes substances J, K, and L inside the beaker before James poured them through the filter paper? A. mixture B. filtrate C. compound D. pure substance 13. When water freezes its density- A. Increases B. Decreases C. remains constant D. Becomes zero 14. A mother heats a 100ml bottle of milk in the microwave oven to give to her baby. The baby s milk should be at body temperature (approx C). The graph below shows how fast the milk, taken from the fridge, heats up in the microwave. For how long should the mother heat the milk in the microwave so that it is ready to give to the baby? Page 4 of 10

5 A. 30 seconds B. 20 seconds C. 10 minutes D. 10 seconds 15. When you add salt to water, the salt dissolves in the water to form a salt solution. Which of the following substances will not dissolve when added to water? (i) Sugar (ii) Sand (iii) Coffee (iv) Mealie meal A. (i) & (ii) B. (ii) & (iii) C. (iii) & (iv) D. (ii) & (iv) 16. Read the following four lines of a given poem. Green plants are busy factories that keep us alive. Without them we would have no meat, No honey from the hive What does the poem tell us? (i) (ii) (iii) Green plants produce food Animals are dependent on plants Plants need animals to survive (iv) Animals and people need plants A. (i), (iii) and (iv) B. (i), (ii) and (iv) C. (ii), (iii) and (iv) Page 5 of 10

6 D. (i), (ii) and (iii) 17. Study the picture below. The picture above shows the generation of electricity. What source of energy is used? A. Sun B. Nuclear C. Water D. Wind 18. Study the diagram below: Lime water turns milky in the presence of a high concentration of carbon dioxide. After the flame goes out, the clear lime water will A. turn milky because oxygen is present. B. stay clear because carbon dioxide is present. C. turn milky because carbon dioxide is present. D. stay clear because oxygen is present. 19. Which of the following are likely to be present in deep sea water? A. Archaebacteria B. Eubacteria C. Blue-green algae D. Saprophytic fungi Page 6 of 10

7 20. Clinton is pulling back a catapult to shoot a can on a wall. When he releases the elastic which one of the following energy changes occurs? A. Kinetic to potential B. Potential to kinetic C. Gravitational to potential D. Gravitational to kinetic 21. Which of the following pictures illustrates the conversion of electrical energy into heat energy? A. 1, 2, 3, and 4 B. 1, 3, and 4 C. 2, 3, and 4 D. 1, 2 and The town of California on the west coast was recently hit by severe flooding. Many people drowned and serious damage was caused to the town. In the picture, we see the following precaution that should be taken during a flood: A. Do not cross floodwater on foot. B. Stay away from downed power lines and electricity wires. C. Move to higher ground and stay there till help arrives. D. If a car stalls in a flooded area, abandon it immediately. Page 7 of 10

8 23. Which of these changes electrical energy to heat energy? 24. Which ONE of the following statements is not true for a liquid? A. A liquid does not have shape, but takes the shape of the container in which it is. B. There are no air spaces between the particles of a liquid. C. A liquid can be measured. D. When liquids are heated, they expand. 25. The graph below gives data from a hospital about patients suffering from TB. Which statement is supported by the graph? A. only six people died in hospital in 1991 from TB B. the highest number of people survived from TB in 1989 C. The highest number of TB sufferers were admitted to hospital in 1993 D. in 1994 the highest number of people Page 8 of 10

9 26. This picture tells us that we can see the moon because A. The moon produces its own light B. The light of the earth is reflected on the moon C. The light of the sun is reflected or bounced off the moon s surface D. The light of the sun is reflected or bounced off the earth s surface 27. Which type of eclipse does the following statement describe? A. Lunar eclipse B. Solar eclipse C. Neither D. Both 28. By fixation of nitrogen is meant- A. Manufacture of nitrogen B. Liquefication of nitrogen C. Conversion of nitrogen into nitric acid D. Conversion of atmospheric nitrogen into Useful compounds 29. We can use a chemical formula to describe a substance. For example, CO2 is carbon dioxide. The chemical formula for water is H2O. Which ONE of the following statements about water is false? A. H2O is the formula for liquid water and for ice B. Water is made from hydrogen (H) and oxygen (O) C. Water vapour (gas) has the chemical formula H2O D. Hydrogen gas and water vapour are the same Page 9 of 10

10 30. Sofia wants to collect 20 milliliters (ml) of water from a forest stream so that she can observe the tiny organisms that live in the water. What would be the best tool for measuring exactly 20 ml of water? A. 1 B. 2 C. 3 D. 4 Page 10 of 10