Question | Answer |
Define energy | The ability to do work or cause change |
Define kinetic energy | The energy of motion |
give an example of kinetic energy | A bowling ball |
Define potential energy | Energy that is stored and held in readiness |
give an example of potential energy | A bow pulled back and ready to shoot an arrow |
List the 6 forms of energy | electromagnetic, thermal, nuclear, electrical, mechanical, chemical |
Example of electromagnetic energy | microwaves |
Example of electrical energy | energy carried by powerlines |
Example of mechanical energy | wind |
Example of nuclear energy | energy in the sun |
Example of thermal energy | energy that melts ice cream |
Example of chemical energy | gasoline |
Describe the path of energy from the sun to a light bulb by way of a windmill. Which form is the energy being converted into during each step? | sun: nuclear to electromagnetic, air: electromagnetic to mechanical, windmill: mechanical to electrical, light bulb: electrical to electromagnetic |
What happens to water (liquid) that gains energy? | The water evaporates |
What happens to water vapor (gas) that loses energy? | The water condenses and may eventually freeze |
Describe what happens when cold water is on top of warm water | they mix |
describe why they mix when cold water is on top of warm water | warm water rises |
describe what happens when warm water is on top of cold water | they don't mix |
describe why they don't mix when warm water is on top of cold water. | cold water is more dense |
describe what happens when salt water is on top of fresh water | they mix |
describe why they mix when salt water is on top if fresh water | salt water us more dense |
describe what happens when fresh water is on top of salt water | they don't mix |
describe why they don't mix when fresh water is on top of salt water | fresh water is less dense |
Describe what drives deep water currents | Different densities |
Describe what drives surface water currents | wind |
Name and describe the location and temperature of any one surface current in the ocean. | the gulf stream starts at the gulf of mexico and goes up the coast of north america and it is a warm current |
Describe an impact that surface currents can have on people or the environment. | it can influence the climate of coastal areas |
What form of energy do we get from the sun? | electromagnetic |
Describe the types of heat transfer that take place from the sun to our atmosphere. Use the words radiation, conduction, and convection. | heats the ground with radiation, air molecules touching ground by conduction, air molecules heating atmosphere by convection |
Define wind | movement of air from areas of high pressure to areas of low pressure |
Which is denser, cold air or warm air? | cold air |
Which has greater pressure, cold air or warm air? | cold air |
If the air over the ocean is 22 degrees and the air over the land is 28 degrees, which way will the wind blow? | from the ocean to the land |
why will it blow from the ocean to the land? | the air over the ocean is more dense |
what kind of wind is it blowing from the ocean to the land? | sea breeze |
Name the calm areas between the Prevailing Westerlies and the Tradewinds. | horse latitudes |
Name the calm area between the North Tradewinds and the South Tradewinds. | doldrums |
Define tornado. | whirling columns of air |
List 4 conditions under which it is likely a tornado will form | in the Great Plains region, late spring or early summer, late afternoon, thunderstorms |
Where is Tornado Alley located? | region in the midwest USA overlapping the great plains |