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Grade 3 Science Quiz – Earth and Space Systems: Soils in the Environment - Ontario Science Curriculum

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Ontario Science Curriculum | Grade 3 Science Quiz | Topic: Earth and Space Systems | Soils in the Environment | Standard: Ontario Science Curriculum – Grade 3 | 10 multiple-choice questions

Question 1

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What is soil made of?

Only sand A mixture of tiny rock pieces, water, air and bits of dead plants and animals Pure clay and nothing else

Question 2

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What is humus?

A type of solid rock found deep underground The tiny pieces of sand in soil The dark, rich part of soil made from decayed plants and animals

Question 3

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Why is soil important for plants?

Soil keeps plants cool in summer and has no other use Soil holds plants in place and provides them with water and nutrients Soil provides sunlight to plant roots

Question 4

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Which type of soil is best for growing many plants?

Sandy soil — because it has big grains Loam (a mix of sand, silt and clay) Pure clay — because it is the heaviest

Question 5

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What do worms do in the soil?

They eat plant roots and damage crops They tunnel through soil, letting in air and water and mixing in organic material They make soil harder by compacting it