Light & Waves
Energy
Threats & Law of Conservation of Mass
Gravity, Synthetic Materials, & Electromagnets
States of Matter & Atoms/ Molecules
100
What reflects light?
Mirror
100
How do you increase potential energy?
Raise it up higher
100
What is the biggest threat to our environment?
Humans
100
What is gravity?
The force of attraction between all matter
100
Are the atoms close together, separated, or spread apart in a solid?
Close together
200
What refracts light?
Prisms
200
What are three clues a chemical change occurred?
Gas, odor, color change, light
200
What is the only course of action we can do to counter this threat to our resources?
Engineering and Science
200
What makes gravity stronger?
Mass
200
Are the atoms close together, separated, or spread apart in a gas?
Spread apart
300
What is wavelength?
The distance between the waves
300
What are some chemical changes?
Rusting, burning, molding, decomposing, tarnishing, corrosion
300
What is the Law of Conservation of Mass?
In a chemical reaction, mass is neither destroyed nor created
300
What are synthetic materials?
Man made materials
300
Are the atoms close together, separated, or spread apart in a liquid?
Separated
400
What is amplitude?
How high the wave raises from the zero line.
400
What is kinetic energy?
Kinetic energy= energy in motion= unbalanced forces
400
What is an example of the Law of Conservation of Mass?
100 grams of milk+ 15 grams of chocolate powder= 115 grams of chocolate milk
400
Where are synthetic materials made?
Factories
400
What are the three parts of an atom?
Protons, neutrons, and electrons
500
True or False: A light wave is reflected when it is bent.
False
500
What is potential energy?
Potential energy= energy at rest= balanced forces
500
What is the equation of the Law of Conservation of Mass?
Total mass of reactants= total mass of products
500
What are two ways to make an electromagnet stronger?
1. Add more batteries 2. Add more coils
500
What is the difference between an atom and a molecule?
An atom is made up of protons, neutrons, and electrons and a molecule is made up of two or more atoms
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