Grade 8 Revision

Pliers and scissors use a type of mechanism called ---------.

Levers are sometimes joined together with ------- to change the direction of motion

Mechanisms are used to change which of the following?

• Noise level

• Speed

• Direction of motion

• Type of location

• Distance traveled

Which of the following mechanisms/products has an oscillating output motion

• Sewing machine

• Windscreen wipers

• Bicycle

• clock

3. Which type of lever is this?

• First Class Lever
• Second Class Lever
• Third Class Lever

WHAT ARE THE 3 MAIN PARTS OF A LEVER?

• FOOT, EFFORT, REPORT
• FULCRUM, STRUCTURE, EFFORT
• FULCRUM, EFFORT, LOAD

For a lever to be a first class lever the fulcrum needs to be ..

• between the load and the effort
• on one side and the load and effort on the other side 
• on the same side as the load arm. 

Levers make work ________.

• Harder
• Easier
• Alright
• OK

A wheelbarrow is an example of a:

• 1st class lever
• 2nd class lever
• 3rd class lever

Coal is...

• A renewable source of energy

• A non-renewable source of energy