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Moving Parts
A clock uses gears.

Moving Parts

In KS2 D and T children are taught about the moving parts in machines. This is a broad topic covering pneumatic, linkage, cam and pulley systems, as well as more simple moving parts - for example, a slider in a children's book

Moving parts are those parts in a machine that are not fixed, and they can seem to make products come alive. There are different systems which make parts move - diggers can use pneumatic or hydraulic systems, a pulley is used to lift heavy weights, and cams can change a circular motion into an up and down one. Machines comprise both moving and fixed parts. There are many moving parts in a car which enable us to drive it.

Test yourself on pneumatic, linkage, cam and pulley systems. Can you get all 10 questions right?

1 .
What affects the type of movement of a cam follower in a cam system?
The size of the cam
How fast the cam is turned
The shape of the cam
The length of the cam follower
Parts of the cam that stick out more make the cam followers move further
2 .
Which item does NOT use gears?
Clock
Oven
Bicycle
Car
Ovens generate heat rather than movement
3 .
What is the part called that goes through the cam?
Follower
Axle
Lever
Pivot
The axle is attached to a handle which makes the axle and cam turn
4 .
Which parts are used in a pneumatic system?
Syringe, card and balloon
Balloon, tube and card
Tube, card and lever
Syringe, tube and balloon
Air passes between the syringe and the balloon through the tube
5 .
Which everyday item makes a good pulley?
Pencil
Ruler
Rubber band
Glue
Most pulleys use ropes
6 .
What does a pneumatic system use to make it move?
Air
Water
Gears
Pulleys
Pneumatic means powered by air. Hydraulic means powered by liquid
7 .
Which list describes the parts of a linkage system?
Levers and cams
Cams and pivots
Levers and pivots
Gears and pivots
A lever generates more force the further away from the pivot its end is
8 .
Which of these is NOT a method of moving parts in books?
Sliding
Pop up
Levers
Motor
Motors are used in more complicated designs
9 .
Which of these items does NOT use air to work?
Foot pump
Whistle
Scissors
Inflatable swimming aid
Scissors use a lever system
10 .
What joins the levers together in a linkage system?
Pivots
Cams
Pulleys
Gears
Pivots can move or keep still

 

Author:  Amanda Swift

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