The oldest fossil records date back about
a) 100 years.
b) 6 thousand years.
c) 2 million years.
d) 3500 million years.
[Ques. 2] An astronaut tosses a ball out in space where gravitational forces may be neglected. What will happen to the ball?
a. It will stop as soon as the force the astronaut gave it is used up.
b. It will stop when the energy the astronaut gave it runs out.
c. It will stop after a short time because there is no gravity to keep it moving.
d. It will move in a circle like a boomerang.
e. It will be slowed down very gradually by collisions with molecules in space.
[Ques. 3] The study of fossils is called
a)geology.
b)biology.
c)paleontology.
d)correlation.
[Ques. 4] As an object moves from point A to point B only two forces act on it: one force is conservative and does 70 J of work, the other force is nonconservative and does +50 J of work. Between A and B,
a. the kinetic energy of object increases, mechanical energy increases.
b. the kinetic energy of object decreases, mechanical energy increases.
c. the kinetic energy of object decreases, mechanical energy decreases.
d. the kinetic energy of object increases, mechanical energy decreases.
e. None of the above.
[Ques. 5] Most of Earth's freshwater supply is now in the
form of
a) oceans.
b) rivers and lakes.
c) groundwater.
d) glacial ice.
[Ques. 6] As an object moves from point A to point B only two forces act on it: one force is nonconservative and does 30 J of work, the other force is conservative and does +50 J of work. Between A and B,
a. the kinetic energy of object increases, mechanical energy decreases.
b. the kinetic energy of object decreases, mechanical energy decreases.
c. the kinetic energy of object decreases, mechanical energy increases.
d. the kinetic energy of object increases, mechanical energy increases.
e. None of the above.
[Ques. 7] A characteristic of a glacier is
a) meandering.
b) a U-shaped channel cut deep into mountain valleys.
c) V-shaped valleys between mountains.
d) inability to move large rocks.
[Ques. 8] Objects A and B, of mass M and 2M respectively, are each pushed a distance d straight up an inclined plane by a force F parallel to the plane. The coefficient of kinetic friction between each mass and the plane has the same value k. At the highest point,
a. KA = Fd = KB.
b. KA = (F kMg cos)d; KB = (F 2kMg cos)d.
c. KA = (F Mg sin)d; KB = (F 2Mg sin)d.
d. KA = (F Mg sin kMg cos)d; KB = (F Mg sin kMg cos)d.
e. KA = (F Mg sin kMg cos)d; KB = (F 2Mg sin 2kMg cos)d.
[Ques. 9] Material that is carried along by a stream or river in
solution is referred to as
a) chemical load.
b) bed load.
c) dissolved load.
d) suspended load.
[Ques. 10] A slump is a form of
a) glacial flow.
b) wave erosion.
c) landslide.
d) groundwater accumulation.
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