Machines 4 primaria

Which of the following ones is NOT a simple machine?

• Lever

• Lorry

• Inclined plane

Which ones are simple machines?

• Inclined plane, lever and microwave oven

• Lever, pulley and car

• Lever, pulley and inclined plane

Which is the part which is located in the middle in any scissors?

• Effort

• Load

• Pivot point

The three parts of a lever are...

• Pivot point, load and effort

• Pivot point, load and hand

• Load, effort and axle

The three parts of a pulley are...

• Axle, wheel and effort

• Axle, wheel and rope

• Wheel, axle and load

You have to move a load of 25 kg. If you put 5 pulleys instead of 1, you will be able to...

• Move a load of 100 kg

• Move 3 loads of 25 kg

• Both answers are correct

The simplest simple machine is...

• The inclined plane

• The lever

• The pulley

You want to load an elephant into a lorry. You use an inclined plane, but you cannot do it. What can you do?

• Nothing. It's impossible.

• I use a longer inclined plane, so that the inclination is lower.

• I use a shorter inclined plane, so that the inclination is higher.

Who and when was the inventor of the giant screw?

• The Wright brothers, 1903

• Archimedes, 270 B. C.

• Archimedes, 260 B. C.

Which invention did Kirkpatrick MacMillan make?

• The pedal bicycle in 1896

• The pedal bicycle in 1839

• The windscreen wiper in 1903