Term
| What is meant by the term independent variable? |
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Definition
| This is the cause of the result in an experiment. |
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Term
| What is meant by the term dependent variable? |
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Definition
| This is the result in an experiment. |
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Term
| Why would you only want to change one variable at a time in an experiment? |
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Definition
| This is so you know which variable caused the result. |
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Term
| What would happen if you changed several variables at a time in an experiment? |
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Definition
| You would not know which of those variables caused the result. |
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Term
| What format do you follow to write a properly stated hypothesis? |
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Definition
| If (Independent Variable) then (Dependent Variable). |
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Term
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Definition
| This is when water falls to the ground such as in the form of rain, snow, or hail. |
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Term
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Definition
| This is when water is drawn up a plant and comes up off the leaves of plants. |
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Term
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Definition
| This is when water goes from liquid form into gas/vapor form -- such as when water from the surface of a pond or lake goes up into the air. |
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Term
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Definition
| This is when water changes from gas or vapor into a droplet form such as when clouds are formed. |
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Term
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Definition
| This is a channel in which water can travel -- aqueducts can be used to direct water to where it is needed. |
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Term
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Definition
| This is water that is below the earth's surface - it can be at or below the water table. |
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Term
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Definition
| This is the upper limit of the ground which is fully saturated with water |
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Term
| What is meant by water conservation? |
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Definition
| This is any way that you use to save water or to use less water? |
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Term
| What are examples of water conservation? |
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Definition
| taking shorter showers, watering you grass only once or twice a week, using a low-flow shower head, etc. |
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Term
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Definition
| This is sewage (waste water) from homes. |
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Term
| Why is domestic sewage dangerous if untreated? |
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Definition
| There can be pathogenic (disease - causing) microorganisms in it. |
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Term
| Water is used to cool power plants. Why is this a problem? |
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Definition
| The warmed up water that is released can kill organisms with thermal shock, holds less oxygen so makes is difficult for aquatic animals, and can cause the disappearance or species which then allows non-native species to take over |
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Term
| What is meant by the term non-renewable resource? |
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Definition
| This is a resource that cannot be replaced in less than 100 years. |
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Term
| What is a renewable resource? |
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Definition
| This is a resource that is very abundant and can be replaced in less than 100 years. |
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Term
| What is meant by alternative energy? |
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Definition
| These are forms of energy that are alternatives to fossil fuels. |
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Term
| Give some examples of fossil fuels. |
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Definition
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Term
| What is the problem with using fossil fuels? |
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Definition
| These give off Carbon Dioxide when burned. The Carbon Dioxide then contributes to Global Climate Change. |
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Term
| What is a greenhouse gas? |
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Definition
| This is any gas that contributes to the warming of Earth's atmosphere. Examples include Carbon Dioxide and Methane. |
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Term
| What are examples of alternative energies? |
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Definition
| Wind, hydroelectric, solar, fuel cells, geothermal, nuclear, biomass/biofuel |
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Term
| What is a disadvantage to wind energy? |
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Definition
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Term
| What is a disadvantage to nuclear energy? |
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Definition
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Term
| What is an example of biofuel? |
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Definition
| Ethanol that is used in gas for cars |
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Term
| What do solar cells (photovoltaic cells) do? |
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Definition
| They convert sunlight energy into electricity. |
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Term
| What is hydroelectric power? |
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Definition
| This is using water over a dam to turn a turbine to generate electricity. |
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Term
| What are examples of biomass energy? |
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Definition
| burning logs or any other material from plants or making ethanol out of corn |
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Term
| What is geothermal energy? |
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Definition
| This is getting energy from the earth. The liquid rock (magma) needs to be near the surface of the earth such as in volcanically active areas |
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Term
| What has been happening to the amount of Carbon Dioxide in our atmosphere? |
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Definition
| It fluctuates throughout the year but it is generally increasing over the last several decades. |
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Term
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Definition
| This is the long term conditions related to characteristics such as temperature and precipitation of a geographical area. |
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Term
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Definition
| This is the day to day conditions related to characteristics such as temperature and precipitation in a local area. |
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Term
| What causes the seasons on the Earth? |
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Definition
| The tilt of the Earth - which ever hemisphere is pointed toward the sun as the Earth orbits the sun will be having summer and longer daylight. |
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Term
| Why does the region at the Earth's equator have relatively constant weather and daylight hours? |
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Definition
| This is because when the Earth orbits the sun the equator (middle) region has little to no shift - receives relatively similar solar exposure throughout the year. |
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Term
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Definition
| Warm, moist air rises. When air reaches its dew point, it condenses and droplets of condensed moisture settle on/form around condensation nuclei. |
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Term
| What are condensation nuclei? |
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Definition
| This are particles in the air such as pollen, smoke, or soot that provide a surface for droplets to form on allowing for the formation of clouds. |
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