Intro to Machines
A device that does a physical task.
What is a machine?
Clothing item worn to protect your hands.
Gloves
The definition of discovery.
an act of finding out or learning of for the first time.
Another word for power, this exists in many forms.
What is energy?
The most basic machine.
Clothing item worn to protect your eyes.
Goggles
The definition of invention.
a new thing that someone has made
Why do we need energy?
We need energy to make things move and to make machines work.
Name three examples of simple machines.
What are pulley, lever, wheel?
(inclined plane, screw, wedge)
List four clothing items that are worn for accident prevention.
Helmets, boots, waterproof clothing, visor.
List three inventions.
the lightbulb, cars, computers.
(answers may vary)
What is the difference between renewable and nonrenewable energy?
Renewable energy is made from resources that nature will replace. Nonrenewable energy is made from natural resources that cannot be replaced after they are used.
The difference between simple machines and complex machines. Give an example of each.
What is: compound machines are more than one simple machine combined together. A simple machine is a wheel. A compound machine is a car.
(other examples accepted as well)
Describe accident prevention.
Accident prevention are the steps taken and clothes worn to insure safety in the workplace.
List three discoveries.
Fire, metal, antibiotics
Renewable: Solar, wind, water
Nonrenewable: coal, oil, gas