Simple Machines
How many components make up a simple machine?
Simple machines are made from one or two components
True or False: Complex Machines are made from one or two components
False! Complex machines are made from many components
Machines need _______ to work in the forms of manual, electrical, and heat.
Energy
What do we use to tell time?
A clock or watch
Where does wool come from?
Sheep
Which simple machine is made up of a long bar that moves up and down over a point we call a pivot
Lever
The _____ is a lever that changes the direction of a bike
Handlebar
What kind of energy does a bike need?
Manual energy (human)
Which invention allows us tp hear what´s happening in the world and for music?
The radio
What material is transparent and lets in light? We use this material to make windows!
Glass
What simple machines is a circular object tha rotates around a central axle?
a Wheel
The wheels of a bike turn on a _______ and allow the bicycle to move
axle
What kind of energy do traffic lights and mobile phones need?
Electrical energy
What invention allows us to reproduce books?
Printing press
Which material is used to make roads?
Asphalt
This simple machine has a wheel and a rope. The wheel has a groove on the outside, the grove has a rope around it
Pulley
______ are a set of levers that are joined to the handle bar of the bike. When you squeeze it, it presses against the wheel and the bike stops
brakes
What kind of energy do cars and motorcycles use?
Heat energy, by burning oils
Which invention allows us to use a certain type of energy to move machines and was used for some trains?
Steam engine
We can help the environment and conserve materials by following the...
3 Rs
Reduce Reuse Recycle
What are the three types of simple machines?
The lever, the wheel, and the pulley
One a bike, the ______ are the levers that use human force to turn the gear.
Pedals
What are the three different types of energy?
Manual energy, electrical energy, and heat energy
Which invention keeps food cold? We all have one at home!
The Refrigerator
Which material do we use to make strong machines and tools? (only choose one)
wood polyester leather steel plastic
Steel
Steel is a strong metal we use to make machines and tools