Fact 1: Electricity sometimes is used for heating buildings. Fact 2: Most electricity is created with a turbine generator. Given the two facts above, what are most buildings heated with?

OPTIONS:
- a hydraulic system
- electromagnetic energy
- compound of hydrogen oxygen
- Movement of an air mass
- cellulose
- turbine generators
- lowered energy cost
- direct energy

Answer: turbine generators

Fact 1: Wind is used for producing electricity. Fact 2: Wind Turbines Wind turbines are windmills that generate electricity. Given the two facts above, turbines are used to what?

OPTIONS:
- direct energy
- Metling snow
- run a car
- produce electricity
- kinetic energy
- chop trees
- lift heavy objects
- enormous damage to homes

Answer: produce electricity

Fact 1: Carbon dioxide concentrations in the air have increased over the last decade dramatically. Fact 2: Carbon dioxide, CO2, is usually a harmless gas. Given the two facts above, what concentration in the air has increased dramatically over the last decade?

OPTIONS:
- zinc
- CO2
- h2o
- CFCs
- lungs
- coal
- O2
- CO 2

Answer: CO2

Fact 1: Apan is used for cooking food by heating food in it on a stove. Fact 2: Pan sauces are made from the pan juices of cooked meats or fish. Given the two facts above, what can be done to meats and fish on the stove?

OPTIONS:
- packaging
- cooking
- Allergies
- heat
- freezing
- marinating
- bacteria
- parasites

Answer:
cooking