What process produces most of the energy that is radiated by the Sun?

Q-1: What process produces most of the energy that is radiated by the Sun?

1) gravitational contraction
2) chemical combustion
3) nuclear fusion
4) nuclear fission
ANSWER: 3 -- NUCLEAR FUSION

Q-2: What is the hydrostatic pressure at the bottom of a pool 6 meters deep?

1) 60,000 Newtons per meter squared
2) 6,000 Newtons per meter squared
3) 600 Newtons per meter squared
4) 60 Newtons per meter squared
ANSWER: 1 -- 60,000 NEWTONS PER METER SQUARED

Q-3:  What is a typical wavelength of an AM radio wave?

1) 3000 meters
2) 300 meters
3) 30 meters
4) 3 meters
ANSWER: 2 -- 300 METERS

Q-4: A ball is thrown upwards with an initial velocity of 5 meters per second. How many seconds will it take to reach maximum height?

1) 0.5 seconds
2) 1 second
3) 1.5 seconds
4) 2 seconds
ANSWER: 1 -- 0.5 SECONDS

Q-5: Albert Einstein received the Nobel prize in physics for his work on:

1) gravitation
2) relativity
3) photoelectric effect
4) Brownian motion
ANSWER: 3 -- PHOTOELECTRIC EFFECT

Q-6:  A typical microwave oven produces microwave radiation with a wavelength of:

1) 3 meters
2) 3 x 10-2 meters (read: 3 times 10 to the minus 2 meters)
3) 3 x 10 -6 meters (read: 3 times 10 to the minus 6 meters)
4) 3 x 10-9 meters (read: 3 times 10 to the minus 9 meters)
ANSWER: 2 -- 3 x 10-2 METERS

Q-7: An ELECTRON moving horizontally along the +x axis enters a region of space with a horizontal uniform magnetic field pointing in the +y direction. The electron will be deflected:

1) -y direction
2) +y direction
3) -z direction
4) +z direction
ANSWER: 3 -- -Z DIRECTION

Q-8:  Entropy is a measure of:

1) magnetization
2) disorder
3) temperature
4) heat
ANSWER: 2 -- DISORDER