7th
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100

What is a term for the substance which provides immunity to a disease by simulating a disease-causing organism?

Vaccine


100

What is a natural righed formed along the edge of a river's channel?

Levee

100

What theoretical device would generate the maximum possible amount of work from a given amount of heat?

Carnot Engine

100

What is the primary organ of digestion and absorption?

Small Intestine

100

What are chemical eractions and physical changes that absorb heat known as?

Endothermic reactions

200

Which group of drugs includes nicotine?

Stimulants

200

What is the material carried by a stream?

Load

200

Which device uses mechanical energy and latent heat to transfer thermal energy from a colder location to a warmer one?

heat pump

200

Which acid does the stomach produce to kill bacteria and help soften foods?

Hydrochloric acid

200

Which field of chemistry deals with energy changes in chemical reactions?

Chemical thermodynamics

300

Which group of drugs includes alcohol?

Depressants

300

What are large, deep grooves and scratches in rock, produced by glaciers?

Striae

300

Which state of matter exists when temperatures are too high for the matter to exist in its ordinary state?

Plasma

300

What is another name for the tube formed by the digestive organs?

Alimentary Canal

300

Chemical and physical changes that release heat are known as: ________________________

Exothermic processes

400

What is a strong feeling expressed in a physical way?

Emotion

400

What feature consists of a relatively large stream and any smaller streams that could flow into it?

Drainage system

400

Which fundamental force binds the subatomic particles of an atom's nucleus?

Strong nuclear force

400

What are the rhythmic wavees of muscular contractions that move food through the digestive system?

Peristalisis

400

Which type of energy is associated with position relative to a force?

Potential

500

Which type of fats usually come from animal products and are generally solid at room temperature?

Saturated

500

What is a glacier carved valley that has been filled with seawater called?

Fjord

500

What fundamental force is exerted on all objects that have mass?

Gravitational force

500

Which type of nutrient should account for most of your total calorie intake?

Carbohydrates

500

According to the second law of thermodynamics, the entropy of the universe is ____________________

Increasing