Simple machines
Name the six simple machines.
An inclined plane, a wedge, a pulley, a screw, a wheel and axle and a lever.
What does a complex machine consist of?
Two or more simple machines.
Name two sources of energy that are not harmful to the environment.
Sun and water.
Which simple machine reduces friction allowing us to transport objects easily?
The wheel and axle.
What type of energy do complex machines NOT usually use?
Energy from people.
Name two sources of energy that are harmful to the environment.
Gas and oil.
Which simple machine helps us join two objects together?
A screw.
Which type of complex machines apply force to make an object move?
Mechanical mahines.
We can use sun and water to generate a different type of energy. What is it?
Electricity.
Which simple machine has a wheel and a rope?
A pulley.
What type of complex machine can help us do big calculations?
An information processing machine.
Thinking of machines and safety, name something that you shouldn't use near water.
Electricity or electric appliances.
Which three elements are part of ALL types of levers?
Effort, fulcrum and load.
Name two thermal machines.
Fridge, freezer, heater.
Name two types of protective clothing you can wear.
Safety goggles and helmets.