7th
What is a term for the substance which provides immunity to a disease by simulating a disease-causing organism?
Vaccine
What is a natural righed formed along the edge of a river's channel?
Levee
What theoretical device would generate the maximum possible amount of work from a given amount of heat?
Carnot Engine
What is the primary organ of digestion and absorption?
Small Intestine
What are chemical eractions and physical changes that absorb heat known as?
Endothermic reactions
Which group of drugs includes nicotine?
Stimulants
What is the material carried by a stream?
Load
Which device uses mechanical energy and latent heat to transfer thermal energy from a colder location to a warmer one?
heat pump
Which acid does the stomach produce to kill bacteria and help soften foods?
Hydrochloric acid
Which field of chemistry deals with energy changes in chemical reactions?
Chemical thermodynamics
Which group of drugs includes alcohol?
Depressants
What are large, deep grooves and scratches in rock, produced by glaciers?
Striae
Which state of matter exists when temperatures are too high for the matter to exist in its ordinary state?
Plasma
What is another name for the tube formed by the digestive organs?
Alimentary Canal
Chemical and physical changes that release heat are known as: ________________________
Exothermic processes
What is a strong feeling expressed in a physical way?
Emotion
What feature consists of a relatively large stream and any smaller streams that could flow into it?
Drainage system
Which fundamental force binds the subatomic particles of an atom's nucleus?
Strong nuclear force
What are the rhythmic wavees of muscular contractions that move food through the digestive system?
Peristalisis
Which type of energy is associated with position relative to a force?
Potential
Which type of fats usually come from animal products and are generally solid at room temperature?
Saturated
What is a glacier carved valley that has been filled with seawater called?
Fjord
What fundamental force is exerted on all objects that have mass?
Gravitational force
Which type of nutrient should account for most of your total calorie intake?
Carbohydrates
According to the second law of thermodynamics, the entropy of the universe is ____________________
Increasing