A material that does not transfer heat very well.
Holds in heat like a blanket or blubber.
100
Give an example of a lever and explain what makes it a lever.
Hammer, wheelbarrow, fishing pole
A lever is a bar that can turn or pivot on a fixed point.
100
What is a push or a pull?
Force
100
Give an example of a gear and explain why it is a gear.
Clock, chain on a bicycle, etc.
A gear is a wheel with teeth.
200
Give an example of a chemical change.
Toasting marshmallows, your cells produce energy from the food you eat, pollution- acid rain, copper acetate growing on penny, tarnish on silver, etc.
200
How can energy be transferred from one object to another?
Convection, conduction, radiation.
200
Give an example of a wheel and axle and explain why it is a wheel and axle.
Doorknob, ferris wheel, skateboard, etc.
A wheel and axle has two parts: a wheel and a bar that passes through the center of the wheel.
200
What is the term that means to apply a force that makes an object move?
Work
200
How would you describe a machine?
Anything that helps you do work or makes work easier.
300
Give two examples of a physical change.
Popcorn, sweat, clouds forming, etc.
300
What is the difference between heat and temperature?
Heat is energy and temperature is a measure of how hot or cold something is.
300
Give an example of an inclined plane and explain why it is an inclined plane.
Long board from a truck, wheelchair ramp, board at an angle, ladder, doorstop
An inclined plane is a flat, slanted surface.
300
What is the ability to do work or to cause changes in matter?
Energy
300
What is an effort force?
The force put into a simple machine.
400
What makes matter change state?
heat energy
400
How does heat affect the size of matter?
They expand or get larger when they heat up and contract or shrink when they get cold.
400
Give an example of a wedge and explain why it is a wedge.
A needle, zipper, ax, razor blades, saw, scissors, knives, cutting tools.
A wedge changes a downward or forward force into a sideways force.
400
A machine with few parts is known as what?
Simple machine
400
Give an example of work.
opening or closing a door, etc.
500
How can you tell the difference between a physical and a chemical change?
Physical change- each element keeps its original properties
Chemical change- the product has properties that are different from those of the original elements
500
What appliances can be compared to the three types of heat transfer? Name the appliance and the transfer method.
convection - oven
conduction - stove top
radiation - microwave
500
What kind of simple machine is an elevator? Name it and explain why.
Pulley.
A pulley is made up of rope, belt, or chain wrapped around a wheel with a groove in it.
500
What is a load?
The object being lifted or moved by a simple machine.
500
What is a compound machine? Give an example.
Two or more simple machines working together.
Clock, bicycle, etc.