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When an electron drops from a higher energy level to a lower one, energy is emitted. In
comparison, how much energy is required to reverse the process, going from the lower
level to the higher level?
A) less energy
B) the same energy
C) more energy
When uranium emits a beta particle, the result is
A) a uranium ion.
B) a different isotope of uranium.
C) the first transuranic element.
D) all of the above
E) none of the above
Which radiation has no association with electric charge?
A) alpha
B) beta
C) gamma
D) all of the above
E) none of the above
Electrons can be transferred from one place to another by the process of
A) friction.
B) contact, which means touching.
C) induction, which means non-touching.
D) all of the above
E) none of the above
During a lightning strike you don't want to be inside a building framed with
A) steel.
B) iron.
C) aluminum.
D) wood.
A cannonball has more kinetic energy than the recoiling cannon from which it is fired
because the force on the ball
A) is more concentrated.
B) meets less resistance than the cannon on the ground.
C) acts over a longer distance.
Which of these strongly relate to a saxophone and clarinet?
A) vibrating air
B) length of tube.
C) both of these
D) neither of these
The twinkling of the stars is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations.
Sun's radiant energy is composed of shorter wavelengths than Earth's due to Sun's
greater
A) size.
B) surface temperature.
C) both of these
D) neither of these
It would be easier to pull the evacuated Magdeburg hemispheres apart if they were
A) held upside down.
B) at sea level.
C) 20 km beneath the ocean surface.
D) 20 km above the ocean surface.
E) none of the above
The critical angle is least in
A) glass.
B) water.
C) diamond.
D) vacuum.
Before ice can form on a lake, all the water in the lake must be cooled to
A) zerooC.
B) 4oC.
C) -32oC.
D) none of the above
When a tennis racquet hits a ball,
A) the racquet loses as much speed as the ball gains.
B) the ball is set in motion with the same speed of the racquet upon contact.
C) the ball hits the racquet.
D) all of the above
When the distance between two stars decreases by one-third, the force between them
A) decreases by one-third.
B) decreases by one-half.
C) increases to twice as much.
D) increases to nine times as much.
E) none of the above
If a satellite's radial velocity is zero at all times, its orbit must be
A) parabolic.
B) elliptical.
C) circular.
D) geosynchronous.
When Nellie Newton hangs by the ends of a rope draped over a large pulley, the tension
in each supporting vertical strand is
A) half her weight.
B) equal to her weight.
C) twice her weight.
D) none of the above
Accelerate an electron and you produce an electromagnetic wave. Accelerate a massive
body and you produce
A) a gravitational wave.
B) a cosmic wave.
C) both of these
D) neither of these
A red shift for light indicates that the light source is moving
A) toward you.
B) away from you.
C) both of these
D) neither of these
When you step on a weighing scale at noon, Earth pulls you downward and the
overhead Sun pulls you upward. The reason the Sun's pull doesn't decrease your weight
at noon is because
A) the Sun's pull on you is negligibly small.
B) the weighing scale is calibrated only in Earth weight.
C) you, the scale, and Earth are in free fall (in orbit) around the Sun.
D) the Sun's pull is cancelled by the gravitation of other celestial bodies.
E) of tidal effects in the "solid" Earth.
A hot dog pants
A) to enable evaporation in its mouth and bronchial tract.
B) to provide more oxygen into its lungs.
C) to impress dogs of the opposite sex.
D) none of the above
The Doppler effect due to motion of excited atoms in a glowing gas tends to make the
spectral lines slightly
A) thicker.
B) thinner.
C) more numerous.
D) none of the above
An Earth satellite in an elliptical orbit has its smallest speed
A) closest to Earth.
B) when getting farther from Earth.
C) when farthest from Earth.
D) need more information
During an eclipse of the Sun the high ocean tides on Earth are
A) extra high.
B) extra low.
C) not significantly different.
If a piece of iron and a cup of water at the same temperature are heated so the internal
energy of each doubles
A) the water will have the higher temperature.
B) the iron will have the higher temperature.
C) both will have the same temperature.
D) need more information
According to the Bohr model, an electron in an excited state of hydrogen can emit
A) at most a single photon until the atom re-excites.
B) several photons in a series of transitions to a lower state.
C) a continuous stream of light.
D) none of the above
Light travels slower in a lens having a
A) high index of refraction.
B) low index of refraction.
C) same in each
A rock weighs 30 N on Earth and another rock weighs 30 N on the Moon. Which rock
has the greater mass?
A) the one on Earth
B) the one on the Moon
C) They have the same mass.
D) not enough information
The origin of any microtides in the human body is most likely the
A) Sun.
B) Moon.
C) Earth.
Light from a lit match originates with accelerating
A) electrons.
B) protons.
C) neutrons.
D) all of the above
A rock dropped from a 5-m height accelerates at 10 m/s2 and strikes the ground 1 s
later. If the rock is dropped from a height of 2.5 m, its acceleration of fall is
A) half.
B) the same.
C) twice.
D) four times as much.
A ball that gains speed as it rolls down a hill experiences a
A) net torque.
B) net force.
C) both of these
D) neither of these
Which are consequences of different speeds of light in different media?
A) mirages
B) rainbows
C) brilliant colors of diamonds
D) all of the above
E) none of the above
