Science?

The emission of energy as electromagnetic waves

The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

The process by which heat or electricity is directly transmitted through a substance

Necessary to do things that require work

Circles with points on them that usually power vehicles or other gears

You can find it in many vehicles and such things as bikes

Its like a hill but not as steep so it is easier to push things up

A thing many people build with, just like nails.

Like an inclined plane. The form that animated cheese is usually in.

A rope tied around something that when you pull the rope it makes it go up

When you pull it it usually makes something happen