a person who studies science
scientist
to watch carefully
observe
to move down quickly
fall
the force that pulls things down
gravity
to find something new
discover
a basic rule or truth
principle
the amount of space something takes
volume
something that flows, like water
liquid
to go down under water
sink
to stay on top of water
float
a test to learn something
experiment
a new idea or thing
invention
known by many people
famous
wanting to know more
curious
to make something clear
explain
the earth and all people, places, and things
world
