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GJHS PhySci Final
GJHS PhySci Final Part 2 (2011-2012)
Question | Answer |
---|---|
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 |