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SOUTH AFRICAN NATURAL SCIENCE OLYMPIAD
1ST
ROUND REVISION HELD UNDER THE AUSPICES OF
NATIONAL SCIENCE OLYMPIADS
GRADE FIVE DATE : MARCH 2013 DURATION : 1 hour
INSTRUCTIONS TO CANDIDATES
1. This paper consists of 15 multiple choice questions and 6 pages. 2. Write your NAME, GRADE and NAME OF SCHOOL at the top of the separate answer sheet
provided.
3. For each question/statement FOUR (4) possible answers are given. Only ONE is correct. Select the correct answer and place a CROSS (X) over the letter only of the correct answer in your answer sheet.
4. Ensure that your cross is in line with the question number you are working with. No credit will be given if there is more than one cross for a particular question.
5. If a cross is placed in a wrong block then shade the incorrect block. Thereafter, place a cross
in the correct block. 6. Only the answer sheet must be submitted to the teacher at the end of the examination. The
question booklet must be retained by you. 7. Use a blue or black pen only.
HINT : First select and mark the answers in the question booklet. When
you are satisfied, then transfer your choices to your answer sheet to reduce errors and
corrections.
Cucurbita pepo
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1. Metamorphosis refers to the changes which animals undergo to look like their parents.
The animal in the picture undergoes …….. A. partial change B. no change C. complete metamorphosis D. incomplete metamorphosis
2. Study the following instruments.
Which combination of the above from 1 to 3 would show temperature, wind speed and wind direction respectively?
A. 2; 1; 3 B. 3; 1; 2 C. 2; 3; 1 D. 1; 2; 3 3. Zane studies the breakfast menu at Wimpy. The menu offers: A cup of tea - 150KJ A portion of bacon and eggs - 2 600KJ A bowl of cereal with milk - 720KJ A toasted cheese sandwich - 1 800KJ A glass of milkshake - 325KJ How much energy would Zane get if he ate the following for breakfast: A glass of milkshake, a bowl of cereal with milk, a portion of bacon and eggs and a cup of tea? A. 1 124KJ B. 2 436KJ C. 3 795KJ D. 5 595KJ
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4. Study each of the statements about dicotyledons carefully and then select the incorrect combination. 1. The flower parts are arranged in multiples of three. 2. The seed has two cotyledons. 3. The plant has a fibrous root system. 4. The veins on the leaves are a network.
A. 1 and 4 B. 3 and 4 C. 1 and 3 D. 2 and 4 5. The diagram below shows ways in which groundwater can be
affected by humans.
Which statement is best supported by the diagram?
A. Chemicals applied by farmers lower the level of pollution in drinking
water
B. Drinking water can become polluted by unsuspected sources
C. Human activities do not affect groundwater
D. Toxic waste is safe if buried below the level of basements of
nearby homes
6. The pistil in a flower is made up three parts. Which one of these combinations is correct.
A. stamen , style, ovaries B. stalk, stigma, anther C. stigma, style, ovaries
D. style, stalk, ovaries
7. The illustration below shows an example of energy changing forms.
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Which changes in energy form are shown in the diagram? A. electrical sound light
and mechanical B. sound mechanical light
and electrical C. mechanical light sound
and electrical D. light electrical
mechanical and sound
8. Suppose you have four straws: one 4cm long, another 5cm long, a third 6cm long and the last 7cm long. What would happen to the pitch if you blew air through these straws.
Which straw will have the lowest pitch? A. 4cm straw B. 5cm straw C. 6cm straw D. 7cm straw 9. Mossgas is a South African company that turns gas into …….. A. oil B . liquid fuel C. solids D. water 10. During the process of photosynthesis, plants use the light of the
sun, their chlorophyll and a gas from the air to make food in their leaves.
What is this gas called?
A. oxygen B. hydrogen C. carbon dioxide D. water vapour
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11. Sam built this model of the Sun, Moon and Earth.
Which phase of the Moon is shown in Sam’s model?
A. full moon B. new moon C. first quarter D. third quarter
12. Nirvana wants to collect 20 millilitres (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
13. Dhesh sometimes leaves bread pieces on her bird feeder for the robins ( bird ) to eat. She is trying to determine whether robins like rye, wheat or white bread. She hypothesized that robins like
wheat bread more than the other types of bread. Dhesh places equal amounts of each bread on the bird feeder. What information would then determine if her hypothesis is correct?
A. when the robins come to eat B. how many robins come to eat C. which type of bread is gone first D. how long until all the bread is gone
14. The teeth of the animals enable them to eat different things. A drawing of different animals and a chart comparing the diets of these animals are shown below.
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Using the information in the chart, which one of the other animals has teeth that are most similar to those of a panther? A. Black bear B. Cow C. Bobcat D. Raccoon
15. Kesh built a circuit in the picture below using a battery, insulated copper wire and an iron nail. The nail has become magnetized
by the battery and is attracting a metal clip.
Which form of energy caused this nail to become magnetized?
A. electrical B. heat C. light D. mechanical
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SOUTH AFRICAN NATURAL SCIENCE OLYMPIADS
GENERAL INFORMATION FOR 2013 FINAL ROUND PARTICIPATION
1. These SA Olympiads are organised by National Science Olympiad. (Do not confuse with SAASTA).
2. It caters for Natural (Grades 4-9), Life and Physical Sciences
(Grades 10 & 11) AND costs only R20 to participate. 3. The Final round of the Olympiads for this year will be held on 03
September 2013. 4. Learners should not be deprived of this opportunity to participate.
All learners are entitled to enter.
5. All learners who participate in the final round only will receive certificates of participation at least. Other awards are given at a special awards day held to honour, not only the learners that excel, but also the schools and educators that help make that possible.
6. The Olympiads are guaranteed to improve the thinking skills of the
learners. 7. Participation in the Olympiads helps those who intend applying for
bursaries for further study. 8. For further information and entry forms for the 2013 Olympiad, you
may contact :-
Robin – Telefax : 011-3182027 (W/H) / 0832677055 (C) [email protected]
Premee – Telefax : 032-9453036(H)/0835567963 (C)
www.scienceolympiad.co.za
