QUESTION 1
Which of the following statements about equilibrium states is incorrect?
A.A system with a single feedback loop has a stable equilibrium state if the feedback loop is negative.
B.All equilibrium states are stable.
C.On small disturbance, a system starting in a stable equilibrium returns to the stable equilibrium state.
D.On small disturbance, a system starting in an unstable equilibrium moves away from the unstable equilibrium state.

QUESTION 2
Which one of the following temperature scales is the absolute temperature scale?
A.Celsius (oC)
B.Fahrenheit (oF)
C.Kelvin (K)
D.Newton (oN)
QUESTION 3
Based on the following two diagrams, in which part of the electromagnetic radiation spectrum does the Sun's radiation flux maximize?

A.X-Ray
B.Gamma Rays
C.Visible Light
D.Infrared

QUESTION 4
What distinguishes a forcing from a perturbation?
A.Perturbation is a small disturbance of a system; forcing is a stronger disturbance of a system.
B.Perturbation is a temporary disturbance of a system; forcing is a more persistent disturbance of a system.
C.Perturbation can induce both positive and negative feedback loops; forcing can induce either a positive or a negative feedback loop.
D.Perturbation happens over a given period of time; forcing happens from place to place at a given time.

QUESTION 5
Which of the following surfaces generally has the highest albedo?
A.Sand
B.Water (shone by overhead Sun)
C.Fresh snow
D.Grass