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StudyHopFree practice · studyhop.com.auAcademic competition-style practice questions
Five free questions in the style of school academic competitions in science and maths, with the answer and an explanation for each.
Name ____________________Date ______________
- 1.At what temperature does pure water freeze?−10 °C0 °C10 °C100 °C
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Answer: 0 °C
Pure water freezes at 0 °C and boils at 100 °C (at sea level). - 2.Which of these animals is a mammal?SharkDolphinTroutOctopus
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Answer: Dolphin
Dolphins breathe air and feed their young milk, so they're mammals. Sharks and trout are fish. - 3.A square has a perimeter of 36 cm. How long is each side?6 cm9 cm12 cm18 cm
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Answer: 9 cm
A square has 4 equal sides: 36 ÷ 4 = 9 cm. - 4.What happens to most metals when they are heated?They shrinkThey expandThey become magneticNothing
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Answer: They expand
Heat makes particles move faster and spread out, so most metals get slightly bigger (expand). - 5.How many litres is 1,000 mL?0.1 L1 L10 L100 L
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Answer: 1 L
There are 1,000 millilitres in 1 litre.
Answers: Academic competition-style practice questions
- 0 °C. Pure water freezes at 0 °C and boils at 100 °C (at sea level).
- Dolphin. Dolphins breathe air and feed their young milk, so they're mammals. Sharks and trout are fish.
- 9 cm. A square has 4 equal sides: 36 ÷ 4 = 9 cm.
- They expand. Heat makes particles move faster and spread out, so most metals get slightly bigger (expand).
- 1 L. There are 1,000 millilitres in 1 litre.
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