Unit 1
Experiments, repeated observations, and using models
3 types of investigations
Three states of matter
Solid, Liquid, and Gas
The 2 main groups of energy
Kinetic and potential energy
Everything that moves needs a what to get it moving
Forces
The study of objects and their characteristics
Astronomy
A two sided instrument that measures the mass of a solid substance.
Pan Balance
What is the smallest unit of measurement
Atom
When Atoms have more electrons that protons what is it called
Negative electric charge
The force with which a body is pulled toward earth
Weight
Which planet has the largest system of rings
Saturn
What you measure in the experiment and what is affected during the experiment
Dependent Variable
The process in which a substance changes from a solid into a liquid
Melting
How heat energy is created
The movement of atoms
Is a unit that measure the amount of force
Newton
How long does it take the Moon to orbit around the Earth
28 days
First step of the scientific method
Ask a question
A substance made of two or more different atoms that have combined chemically
Compound
A device that converts mechanical energy into electrical energy
Generator
Inertia is Newton's _____ Law
First
Astronomers classify stars according to their physical characteristics. Theses include:
Color, temperature, size, and brightness
A plastic or glass container in which plants grow
Terrarium
Matter that is made up of only one kind of atom
Element
The number of sound waves that pass a pint during a certain amount of time
Frequency
In space objects keep going and going. Why?
Because there is no friction to stop the object
what is the sun composed of
Burning gas