CAS PY 16117

subject Type Homework Help
subject Pages 9
subject Words 1135
subject Authors John A. Suchocki, Leslie A. Hewitt, Paul G. Hewitt

Unlock document.

This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
page-pf1
If molecules in the sky scattered red-orange light strongly instead of blue light, sunsets
would be
A) orange.
B) yellow.
C) green.
D) blue.
Answer:
According to most estimates, Earth is approximately
A) 4.5 thousand years old.
B) 4.5 million years old.
C) 4.5 billion years old.
D) 45 billion years old.
Answer:
A good reflector of radiation is a
A) good absorber of radiation.
B) good emitter of radiation.
page-pf2
C) poor absorber of radiation.
D) none of the above
Answer:
Erosion by alpine glaciers creates
A) V-shaped valleys.
B) U-shaped valleys.
C) drumlins.
D) moraines.
Answer:
When an electron passes through the magnetic field of a horseshoe magnet, the
electron's
A) speed is increased.
B) direction of motion is changed.
C) both of these
D) none of the above
page-pf3
Answer:
The last minerals to crystallize are those with the
A) higher melting point.
B) lower melting point.
Answer:
A woman who normally weighs 400 N stands on top of a very tall ladder so she is one
Earth-radius above Earth's surface. What is her weight there?
A) zero
B) 100 N
C) 200 N
D) 400 N
E) none of the above
Answer:
page-pf4
Earth's first atmosphere was composed of
A) oxygen, hydrogen, and helium.
B) hydrogen and helium, with trace amounts of ammonia and methane.
C) gases from volcanic eruptions.
D) oxygen, water vapor, carbon dioxide, and methane.
Answer:
A changing electric field induces a changing
A) magnetic field.
B) electromagnetic field.
C) both of these
D) neither of these
Answer:
For the following balanced equation, which has the highest coefficient?
4 H2 + 2 C → 2 CH4
A) H2
page-pf5
B) C
C) CH4
D) H4
E) none of the above
Answer:
Galileo said that if you rolled a ball along a level surface it would
A) slow down due to its natural tendency to come to rest.
B) keep rolling without slowing down if no friction acted upon it.
C) roll as long as its inertia nudged it along.
D) eventually roll in the opposite direction.
Answer:
Which of the following statements best describes the role of neutrons in the nucleus?
A) The neutrons stabilize the nucleus by attracting other nucleons.
B) The neutrons stabilize the nucleus by forming bonds with other neutrons.
C) The neutrons stabilize the nucleus by attracting protons.
page-pf6
D) The neutrons stabilize the nucleus by balancing charge.
E) The neutrons stabilize the nucleus by adding mass.
Answer:
Heavy snow showers along the western slopes of the Rockies are most likely caused by
a
A) continental tropical air mass.
B) maritime tropical air mass.
C) continental polar air mass.
D) maritime polar air mass.
Answer:
According to the following balanced chemical equation, if you want to generate two
moles of H2O, how many molecules of O2 do you need?
2 H2 + O2 → 2 H2O
A) 1
B) 2
C) 1/2
page-pf7
D) 4
E) 6.022 1023
Answer:
Deep ocean currents flow in a circulation pattern that is
A) north to south.
B) south to north.
C) west to east.
D) east to west.
Answer:
It would be easier to pull evacuated Magdeburg hemispheres apart if they were
A) held upside down.
B) at sea level.
C) 2 km beneath the ocean surface.
D) 2 km above the ocean surface.
E) none of the above
page-pf8
Answer:
For the following acid-base reaction, identify what compound is formed in the space
marked.
HNO3 + KOH ???? + H2O
A) KNO3
B) H3ONO3
C) KOH2
D) KOH2NO3
E) none of the above
Answer:
When an object falls through the air, as velocity increases the net force
A) increases.
B) decreases.
C) remains the same whether in air or in a vacuum.
Answer:
page-pf9
Which of the following molecules would contain a dipole?
A) H-F
B) Cl-Cl
C) H-H
D) F-F
E) all of the above
Answer:
Which draws more current, a 60-W or a 100-W incandescent lamp, both rated for
120-V operation?
A) 60-W lamp
B) 100-W lamp
C) both the same
Answer:
The movement of a glacier is fastest
page-pfa
A) at the bottom.
B) at its surface.
C) in the middle.
D) along the sides.
Answer:
Correctly identify the following functional groups in this organic moleculeamide, ester,
ketone, ether, alcohol, aldehyde, amine.
A) 1 = ether, 3 = ester, 6 = aldehyde, 9 = alcohol
B) 2 = amide, 4 = ester, 7 = amine, 8 = ether
C) 1 = ester, 5 = alcohol, 8 = ether, 9 = ketone
D) 2 = amide, 6 = aldehyde, 7 = amine, 8 = ether
Answer:
page-pfb
As a person holding her breath swims deeper and deeper in a lake, her density
A) increases.
B) decreases.
C) remains the same.
Answer:
In terms of the periodic table, is there an abrupt or gradual change between ionic and
covalent bonds?
A) There is an abrupt change that occurs across the metalloids.
B) Actually, any element of the periodic table can form a covalent bond.
C) There is a gradual change: the farther apart, the more ionic.
D) Whether an element forms one or the other depends on nuclear charge and not the
relative positions in the periodic table.
Answer:
When a bus brakes to a stop its kinetic energy transforms to
A) stopping energy.
B) potential energy.
page-pfc
C) energy of motion.
D) energy of rest.
E) heat.
Answer:
Minerals are composed of
A) silicon compounds.
B) common types of rocks.
C) homogeneous solids.
D) inorganic solids.
Answer:
The power expended for a barbell raised 2.0 m in 2 s is
A) 1 W.
B) 4 W.
C) 8 W.
D) not enough information
page-pfd
Answer:
A magnet will become weaker if it is
A) dropped on a hard surface.
B) held in a hot flame.
C) either
D) neither
Answer:
If you had a 1 M solution of a weak base what would be its pH?
A) 1
B) 6
C) 7
D) 8
E) 13
Answer:
page-pfe
The existence of the world's subtropical deserts (such as the Sahara) is primarily due to
A) warm ocean currents.
B) strong prevailing northwesterly winds.
C) extremely high temperatures.
D) belts of atmospheric high pressure.
Answer:

Trusted by Thousands of
Students

Here are what students say about us.

Copyright ©2022 All rights reserved. | CoursePaper is not sponsored or endorsed by any college or university.