Fool's gold is a common name for this mineral:
a. halite
b. cinnabar
c. magnetite
d. pyrite
d. pyrite
15
In the U.S., how many gallons of fresh water does each person use per day for personal use on average?
a. 10 gallons
b. 30 gallons
c. 60 gallons
d. 90 gallons
d. 90 gallons
15
What common flavoring comes from the long slender fruit of a climbing orchid?
a. cinnamon
b. vanilla
c. nutmeg
d. peppermint
b. vanilla
15
In daylight, the human eye is most sensitive to which color?
a. green
b. red
c. blue
d. orange
a. green
15
Which of the following is considered a renewable resource?
a. coal fired power plant
b. hydroelectric dam
c. combustion turbine facility
d. nuclear fission power plant
b. hydroelectric dam
15
If a quiet whisper is 10 decibels, then what is the average pain threshold in decibels for humans?
a. 50 decibels
b. 80 decibels
c.120 decibels
d. 200 decibels
c. 120 decibels
15
The sun makes up approximately what percent of matter in our solar system?
a. 17%
b. 50%
c. 85%
d. 99%
d. 99%
15
What is the main cause of seasons on the Earth?
a. the distance between Earth and the sun
b. the tilt of Earth's axis
c. the speed the Earth travels around the sun
d. changes in the amount of energy coming from the sun
b. the tilt of Earth's axis
15
At what temperature are Celsius and Fahrenheit equal?
a. -65
b. - 40
c. 40
d. 65
b. -40
15
How many hearts does an octopus have?
a. 1
b. 2
c. 3
d. 4
