Grade 8 Technology PAT 3

A tender is.....

• a document to make an offer to supply goods or services to a company.

• a process used to soften ore so it can be mined

• a service offered while designing a minneshaft

The IDMEC process has the following steps..

• Investigate, Design, Model, Extract, Communicate

• Investigate, Design, Make, Evaluate, Communicate

• Investigate, Dig, Move, Elavate, Construct

• Inquire, Design, Make, Extract, Communicate

Ore is.......

• the natural rock that contains valuable minerals that can be mined

• the natural sediment that contains valuable sand that can be mined

• the underground rocks that contains valuable fools gold that can be mined

Mineshaft head gear operates using a ........... mechanism

• lever

• an inclined plane

• pulley

......are used to construct the mineshaft head gear in South Africa

• Wood and steel

• Steel and concrete

• Wood and corrugated iron

• Concrete and wood

The advantages of using steel to build the mineshaft head gear are.....

• Weighs more than concrete

  Cannot be stolen

  Quick to construct

  Better quality

• Weighs more than concrete

  Cannot be moved

  Quick to construct

  Cheaper

• Weighs less than concrete

  Adapts and can be moved

  Quick to construct

  Cheaper

The disadvantage of using concrete to build the mineshaft head gear are.....

• Needs dry weather to build

  Expensive

• Timeless

  Can be repurposed

• Does not need much labour