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GJHS PhySci Final

GJHS PhySci Final Part 2 (2011-2012)

QuestionAnswer
Kinetic energy increases as both __________ and ___________ increase. mass; velocity
A rolling ball has ____________ energy. kinetic
Unlike kinetic energy, potential energy is ___________. stored
Potential energy that depends on height is called _________________ potential energy. gravitational
The total energy of the particles of an object is called ____________ energy. thermal
Energy stored in the core of an atom is called _______________. nuclear
Help! Help! I've lost an electron! Are you sure???? I'm _______________! positive
A match stores ___________ potential energy. chemical
Visible light is an example of _____________________ energy. electromagnetic
Most forms of energy can be ______________ to other forms. converted
Niagara Falls is a good example of __________ energy being converted to ___________ energy. potential; kinetic
___________ energy is being converted to __________ energy when natural gas is being used to heat water. Chemical; thermal
The law of conservation of energy states energy cannot be ___________ or ____________. created; destroyed
When you rub your hands together, you use friction to convert ______________ energy into ___________energy. mechanical; thermal
The scientist that suggested that energy can be created under certain circumstances was _____________. Einstein
Petroleum is an example of ______ fuel. fossil
Fossil fuel stores ____________ ______________ energy. chemical potential
Fossil fuel contains energy that originally came from the ____________. sun
The process of burning fuel is called _________________. combustion
When fossil fuel is burned, the chemical potential energy is converted to _____________ energy. thermal
When generators are spun by turbines they produce ___________ . electricity
What type of energy does a spinning turbine have? mechanical energy
The rate at which work is done is __________. power
A device that is twice as powerful as another can do the same amount of work in _______ the time. half
Power equals work divided by ________. time
Power is measured in units called ______. watts
The power of a light bulb that converts electrical energy at a rate of 100J per second is ________ _________. 100 watts
One horsepower is equal to _______watts. 746
All the different kinds of matter in the universe are made from about 100 substances called __________. elements
The smallest possible molecule is made of 2 ____________ held together by a chemical bond. atoms
A neutron walks into a bar and asks, "How much for a drink?" The bartender replies, "For you, __________ ____________." no charge
The extremely reactive Group 1 Elements have ______ valence electrons. 1
When two nuclei combine in a _________ reaction, a huge amount of energy is released. fusion
When ions having a charge of 2+ form bonds with ions having a charge of 2- the charge of the resulting compound is ______. zero
F2, HF, CO2 are examples of _________ compounds. Molecular
At room temperature, a ____________ solution would contain a higher percentage of solute than a saturated solution of the same substances. supersaturated
Because the presence of a solute makes it harder for solvent molecules to evaporate, the boiling point of a solution is _________ than that of a pure solvent. higher
In a reaction of an acid with a base, the pH changes to a value that is closer to _________. seven
Because it will desolve so many solutes, _______ is sometimes called the "Universal Solvent." water
In the digestive system, the organ with the most acidic contents is the ________. stomach
The force of gravity between you and Earth is greater than the force of gravity between you and a car because Earth has more _______ than the car. mass
As the distance between two objects decreases the gravitational force between them _______. increases
A force pushes an object over a distance of 2m. 6J of energy is transferred to the object the size of the force is _____N. 3
If the velocity of an object is doubled, its kinetic energy is multiplied by ____. 4
_________energy such as ultraviolet radiation, formals in the form of waves. electromagnetic
As water runs over a waterfall, its potential energy is converted into __________energy. kinetic
Power is equal to _________ divided by time. work
A 200w light bulb converts electrical energy at a rate of _____J each second. 200
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