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Year 5 - Science

Water resistance: do and review

Forces including simple machines

Unit Summary

This unit covers the effects of gravity, air resistance, water resistance, and friction on objects. It explores how mechanisms like levers, pulleys, and gears magnify forces. Emphasis is on taking precise measurements, recording complex data, and presenting findings.

Lesson Summary

You will learn to carry out an investigation into water resistance and evaluate results.

Key Notes

  • Scientists take, repeat and compare measurements using a range of scientific equipment.
  • The evaluation of an investigation can include an explanation of, and degree of trust in, the results.
  • Greater surface area on a moving object can increase water resistance.

Vocabulary To Learn

  • water resistance: Water resistance is a type of friction force which acts between water and the surface of an object.
  • trust: How reliable we think the results of an investigation are.
  • reliable: If a result is reliable, it measures something consistently.
  • evaluation: In the evaluation of an investigation, scientists judge how reliable the results and conclusion are.

Common Mistakes To Avoid

  • All objects experience the same amount of water resistance, regardless of their size or shape.

3 Quick Questions (With Answers)

1. Explain the scientific idea in this lesson using two key points.

Scientists take, repeat and compare measurements using a range of scientific equipment. The evaluation of an investigation can include an explanation of, and degree of trust in, the results.

2. Define this scientific word and use it in context. 'water resistance'

Water resistance is a type of friction force which acts between water and the surface of an object. Include the word in a full scientific explanation, not as a single label.

3. Correct this common scientific misunderstanding.

Mistake: All objects experience the same amount of water resistance, regardless of their size or shape. Correction: Discussion and explicit teaching. The investigation they carry out will show them that this is not true.

More Lessons In This Unit

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