Grade 8 Term Test revision

What is a composite material?

• A motion in a straight line but goes to and fro

• A substance added to food for a specific purpose

• A combination of two or more materials

• A disc that fits inside a cylinder

Which of these is a conductor?

• Plastic

• Wood

• Copper

• Rubber

What is the force applied to lift or move a load?

• Load

• Torque

• Effort

• Tension

An insulator allows electricity to pass through easily.

• True

• False

Which of these best describes ‘Bias’?

• Fair judgment

• Unfair prejudice

• A force applied to lift an object

• A gear linked to a power source

What is the turning point around which a bar moves?

• Effort

• Load

• Fulcrum

• Torque

Which is the correct order of the Design Process?

• Investigate, Design, Make, Evaluate, Communicate

• Investigate, Plan, Build, Present, Redesign

• Imagine, Design, Build, Test, Present

• Think, Design, Test, Present, Evaluate

Which of these is NOT one of the 5Rs?

• Reduce

• Repair

• Recycle

• Reinforce

The 5Rs include all EXCEPT:

• Remanufacture

• Renew

• Reuse

• Reactivate

Why is fiberglass used for surfboards?

• Heavy but durable

• Brittle like wood

• Light, strong, flexible

• Easily breaks in waves