B
What everything around us is made from.
Matter
Devices that need energy to use or direct a force.
Machines
Thermal energy that moves from a hotter object to a cooler object.
Heat
It makes two objects with mass attract each other.
Gravity
The amount of matter a substance has.
Mass
A machine that has few parts
Simple Machine
A machine that has many parts
Complex Machine
An object gets warmer if it receives heat from another object. It gets cooler if it gives heat away.
Temperature Changes
The force between magnets and nearby metal objects.
Magnetism
The space a substance occupies. We measure it using beakers.
Volume
The appearance and composition of matter change and new substances appear.
Chemical Changes
When some objects get hotter their volume increases and they take up more space.
Dilation
One of the ways that forces can impact an object, for example, when a stationary object starts moving, or when a moving object stops moving.
Movement
Matter can change because it has _______________.
Energy
The properties of matter change but its composition does not
Physical Change
They act when objects touch each other
Contact Forces
A force deforms an object.
Shape Changes
An action that makes an object move or changes its direction or shape.
Force
Physical changes that happen when we heat or cool matter.
Changes of state
They act without touching each other. Two examples are gravity and magnetism.
Remote Forces