2.
a test to learn something
3.
to move or drop to the ground
4.
the force that pulls things toward each other and to the ground
5.
opposite of light in weight
6.
to touch someone or something quickly and with force
7.
something that allows us to see things
8.
something that you take when you are ill or sick
9.
to show that something is true
10.
a person who studies or works in science
