A. carbon
B. iron
C. potassium
D. sodium 2) A hurricane sweeps across a small Caribbean island, killing 50 percent of the herbivore species on the island. Which of the following is the most immediate result?
A. a reduction in biodiversity
B. an acceleration of the carbon cycle
C. an increase in predator populations
D. a decline in decomposer populations 3) In a mouse population inhabiting a grassland area, a mutation occurs that results in a new coat color allele. Which of the following factors has the greatest effect on whether the new coat color will become more common in the mouse population?
A. whether abundant food is available in the grassland
B. whether the new coat color allele is dominant or recessive
C. whether the rate of reproduction in the mouse population is stable
D. whether the new coat color allele increases the survival of mice in their environment Chemistry 4) Which of the following correctly describes molecules of two different gases if they are at the same temperature and pressure?
A. They must have the same mass.
B. They must have the same velocity.
C. They must have the same average kinetic energy.
D. They must have the same average potential energy. 5) Water cools from 2°C to 2°C. During this time, what happens to the motion of the molecules?
A. The motion of the molecules stops.
B. The motion of the molecules increases.
C. The motion of the molecules decreases.
D. The motion of the molecules remains the same. 6) The three main types of nuclear radiation are alpha, beta, and gamma. Which of the following lists these types of radiation from highest penetrating power to lowest penetrating power?
A. alpha, gamma, beta
B. beta, alpha, gamma
C. beta, gamma, alpha
D. gamma, beta, alpha Introductory Physics 7) A 600g basketball, a 57g tennis ball, a 46g golf ball, and a 2.7g table tennis ball are moving with the same velocity. Which ball has the greatest momentum?
A. golf ball
B. basketball
C. tennis ball
D. table tennis ball 8) The motor of one car is more powerful than the motor of another car. Which of the following must be true of the more powerful motor?
A. It can do work more quickly.
B. It can operate for a longer time.
C. It can burn fuel more efficiently.
D. It can store more potential energy. 9) To calculate the momentum of a pickup truck with a velocity of 25 m/s east, it is also necessary to know which of the following?
A. time elapsed
B. drive force of the motor
C. mass of the pickup truck
D. distance that the pickup travels Technology/Engineering 10) Which of the following is used to read a compact disc in a compact disc player?
A. polarization
B. microwaves
C. a magnet
D. a laser 11) A structural component for a bridge needs to be especially strong in tension. Which of the following materials would be most suitable for this component?
A. concrete
B. copper
C. steel
D. wood 12) Which of the following materials would probably be used as a conductor of electric current in a computer chip?
A. glass
B. rubber
C. gold
D. plastic Answer Key 1) A.
2) A.
3) D.
4) C.
5) C.
6) D.
7) B.
8) A.
9) C.
10) D.
11) C.
12) C.
