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Science at key stage 3    (Year 9)

Unit 9K: Speeding up
Section 5: Checking progress

QCA

Objectives
Children should learn:
  • about the forces on moving objects
  • that objects can continue at steady speeds with no force acting in the direction of movement

Activities

Outcomes
Children:
  • Provide pupils with pictures or diagrams of moving objects, eg a car, a swimmer, a puck travelling on an ice rink, and ask them to label forces shown by arrows.
  • Reinforce the correct associations, and challenge misconceptions by showing video or CD-ROM sequences and discussing these, e g ball sports, space travel, astronauts on the Moon.
  • identify forces and show their directions, eg friction, thrust, upthrust, weight
  • state that when forces are balanced, objects do not change speed, and apply this to everyday situations, eg ball sports

Points to note
  • Take the opportunity to challenge any pupil's association between force and constant speed, eg after the ice puck has been struck, it has no force on it in the direction it travels.

Sections in this unit

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This unit is divided into sections. Each section contains a sequence of activities with related objectives and outcomes. You can view this unit by moving through the sections or print/download the whole unit.
1. a. How fast is it moving?
2. b. How fast is it moving?
3. c. How fast is it moving?
4. How do forces affect speed?
5. Checking progress
6. a. How can we increase speed?
7. b. How can we increase speed?
8. c. How can we increase speed?
9. How do parachutes work?
10. Reviewing work