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Environ. Sci. final

Environmental Science 9 Final

QuestionAnswer
What does the frequency of a sound wave determined? pitch
A wave will travel only as long as it has _________ to carry. energy
What is the law of conservation of matter? Matter can not be created or destroyed.
Write and balance and equation using Na and Br2. 2Na + Brx ---> 2NaBr
Write and balance and equation using Ca + O2. 2Ca + Oc --> 2CaO
When you add the charges of a compound, what do the charges need to equal? zero
What law says current is equal to the voltage difference divided by the resistance? OHMs
What is a conductor? helps the flow of an electron
What is an insulator? opposes the flow of electrons
2 positive charges __________ on another repel
A path that allows only one route for an electric current is called a _____. series
A circuit that has two or more branches for electrons to follow is a _____ circuit. parallel
Neutrons are ________. neutral
Protons are _________. positive
Electrons are ________ negative
Energy in the form of motion is ________. kinetic
Stored energy is ________. potential
Potential energy is top
Kinetic energy is the greatest at the bottom
What is the law of conservation of energy? Energy can not be created or destroyed.
As particles in an object move faster, the temperature increases.
Compressional waves are parallel to medium
Transverse waves are perpendicular
The _________ is the height of the wave from rest. amplitude
The amplitude is the ____________ a wave has. amount of energy
The trough is the _________. low point
The crest is the _____. high point
If the frequency is cut in half, the wavelength will ______. double.
The ability of two or more waves to combine and form a new wave is _____. interference
Reflection is ______. returning light
Refraction is ______. bending light
What is Ohm's law? current is equal to voltage and resistance
The net accumulation of electric charges on an object is static electricity
Resistance is the ability to oppose the flow of the electrons
Current is the flow of electrons through a wire or conductor
Insulators do not conduct a current
Conductors encourage a curent to flow
What are permanent magnets? objects that are magnetic all the time
Created by: gcowing