Vocabulary
Humans make objects that simplify our lives, many of these are ____________.
Machines
What is a lever?
A lever is a rigid bar used to reduce the force necessary to lift.
What are the two types of engines?
Combustion and electrical
Energy resources that are used quickly and cannot be replaced are called _________.
Non-renewable
What is pollution?
Pollution contaminates the environment with the waste from using fossil fuels.
A machine with a few parts is a _________ ____________.
Simple Machine
What is a pulley?
A pulley works with a wheel and a rope to reduce necessary force to lift.
Give an example of a machine that uses an electrical engine.
Refrigerator
Washing machine
Dishwasher
Give 2 examples of renewable energy resources.
Water power
Solar Power
Wind Power
Bio-fuels
How does building a big factory affect the environment?
It destroys ecosystems.
A machine made of many parts, or many simple machines, is a _________ ___________.
Compound Machine
Another word for an inclined plane is ____________.
Ramp
Give an example of something that uses a combustion engine.
Car
Rocket
Lawn mower/weed whacker
Name different types of energy a machine might use.
Mechanical energy
Electrical energy
Energy from combustion/heat/fuels
Energy from wind or water
Name 2 machine components that a bicycle uses.
Gear
Wheel
Chain
Elements that link the different parts of a machine are called ____________.
Transmissions
What transmission is often paired with a wheel?
Axle or belt
Give an example of a machine that uses mechanical energy.
Scissors
Bicycle
Pencil sharpener
What are fossil fuels? Give examples. Are they renewable or non-renewable.
Oil, natural gas, coal
Non-renewable
Name 2 types of renewable energy Andalucia produces.
Wind and solar
maybe water
What are gears?
Gears are pairs of wheels with teeth that work with another gear or a chain.
Give an example of a simple machine that is used in the classroom.
Pulley to raise the blinds
Scissors
Pencil Sharpener
Are machines that have an engine simple or compound?
compound
Most of the energy sources we use now are _____________.
Non-renewable
Name a technology that was developed during prehistory.
Lathe
Wheel