Saltwater freezes at...
a. the same temperature as fresh water
b. a slightly higher temperature than fresh water
c. a slightly lower temperature than fresh water
d. saltwater does not freeze
c. a slightly lower temperature than fresh water
15
Which type of camel has two humps?
a. dromedary
b. guanaco
c. bactrian
d. alpaca
c. bactrian
15
If an individual is a dendrochronologist, what would they count?
a. tree rings
b. mammal hairs
c. cephalopod tentacles
d. insect populations
a. tree rings
15
What state in the U.S. has the most nuclear power plants?
a. New York
b. Illinois
c. Pennsylvania
d. South Carolina
b. Illinois
15
About how long does it take for light to travel from the sun to the Earth?
a. 9-10 seconds
b. 9-10 minutes
c. 9-10 days
d. 9-10 years
b. 9-10 minutes
15
The study of poisons is called:
a. oncology
b. toxicology
c. phrenology
d. ergonomics
b. toxicology
15
What vitamin complex includes thiamine, niacin, and riboflavin?
a. vitamin A
b. vitamin B
c. vitamin C
d. vitamin D
b. vitamin B
15
A device used to measure the amount of moisture in the atmosphere is called...
a. a hydrometer
b. a hygrometer
c. an anemometer
d. a barometer
b. a hygrometer
15
One of the risks of exposure to high levels of noise is called tinnitus, which means:
a. a permanent loss of hearing
b. a persistent ringing or hissing in the ears
c. a temporary loss of hearing
d. abdominal discomfort
b. a persistent ringing or hissing in the ears
15
If an individual is suffering from emphysema, what organ of the body is primarily affected?
a. heart
b. skin
c. liver
d. lungs
d. lungs
15
Plants get their nitrogen from...
a. rain
b. the soil
c. the air
d. water
b. the soil
15
Steel is composed of a number of elements. The two essential elements are iron and...
a. aluminum
b. carbon
c. nickel
d. silicon
b. carbon
15
Which of the following is an important element of stainless steel?
a. chromium
b. magnesium
c. copper
d. nickel
a. chromium
15
One metal dissolved in another is called
a. an alloy
b. an assay
c. a mineral
d. a ceramic
a. an alloy
15
The process by which a substance absorbs moisture upon exposure to the atmosphere is called:
a. efflorescence
b. deliquescence
c. dehydrogenation
d. desalination
b. deliquescence
15
The first animal launched into orbit was a...
a. mouse
b. monkey
c. chimpanzee
d. dog
