Energy
Potpourri
Heat
Transformation
Radioactivity
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Half Life
Energy
Half Life for $100
If a radioactive material has
a half life of 10 years, what
fraction of the material will
remain after 30 years?
A.
B.
C.
D.
1/2
1/4
1/8
1/16
C. One eighth
1/8
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Half Life for $200
Radon-222 has a half life of 4
days. If ¼ of the original
sample remain, how much
time has passed?
A.
B.
C.
D.
1 day
16 days
8 days
4 days
C. 8 days
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Half Life for $300
The half-life of carbon-14
is 5730 years. How much
of an 80g sample will
remain after 17,190 years?
A.
B.
C.
D.
40 g
80 g
20 g
10 g
D. 10 grams
Because 3 half-lives
have passed
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Half Life for $400
An original sample of the radioisotope
fluorine-21 had a mass of 80.0 milligrams.
Only 20.0 milligrams of this original
sample remain unchanged after 8.32
seconds. What is the half-life of fluorine21?
A. 1.04 s
B. 2.08 s
C. 4.16 s
D. 8.32 s
C. 4.16 s
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Half Life for $500
U-235 has a half-life of 704 million
years. A sample of rock was found
to contain ¼ of the U-235 atoms
present when it formed. What is
the approximate age of the rock?
A. 1.4 billion years
B. 704 million years
C. 352 million years
D. 2.8 billion years
A. 1.4 billion
years
(2 half-lives passed)
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Energy Transformation for $100
What do a toaster, a hair dryer, and
an iron have in common?
A. They convert electrical energy to
heat energy.
B. They convert electrical energy to
mechanical energy.
C. They convert mechanical energy to
electrical energy.
D. They convert heat to electrical
energy.
A. They convert
electrical energy
to heat energy.
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Energy Transformation for $200
Which best describes the energy
transformation that takes place in
the picture below?
A. Light to Heat
B. Mechanical to
Chemical
C. Chemical to Light
D. Electrical to Light
C. Chemical to
Light
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Energy Transformation for $300
A pendulum bob swings back and forth in an
arc. Which describes the energy conversion
process in one swing of the pendulum from
left to right.
A. Kinetic energy to chemical energy to potential
energy
B. Kinetic energy to potential energy back to
kinetic energy
C. Potential energy to kinetic energy back to
potential energy
D. Potential energy to kinetic energy to
electromagnetic energy
C. Potential energy to
kinetic energy back to
potential energy
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Energy Transformation for $400
Which best describes the energy
transformation that takes place in
the picture below?
A. Mechanical to Light
B. Heat to Sound
C. Heat to Mechanical
D. Sound to Light
B. Heat to Sound
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Energy Transformation for $500
Heterotrophs consume food to obtain energy
for biological processes. During exercise,
the chemical energy in food is transformed
into what other forms of energy?
A. Potential and electrical energy
B. Electromagnetic and heat energy
C. Mechanical, kinetic, and heat energy
D. Potential, electromagnetic, and heat
energy
C. Mechanical,
kinetic, and heat
energy
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Radioactivity for $100
The three main types of nuclear
radiation are alpha, beta, and
gamma. List the three types of
radiation from highest
penetrating power to lowest
penetrating power?
Gamma, Beta,
Alpha
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Radioactivity for $200
What is a problem commonly associated
with nuclear power facilities?
A. A small quantity of energy is produced.
B. Reaction products contribute to acid
rain.
C. It is impossible to control nuclear fission.
D. It is difficult to dispose of wastes.
D. It is difficult to
dispose of wastes.
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Radioactivity for $300
An alpha particle is the same as a
A.
B.
C.
D.
Helium nucleus
Hydrogen nucleus
Beta particle
Gamma ray
A. Helium nucleus
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Radioactivity for $400
The final elements produced by
radioactive decay differ from the
original radioactive elements because
the nuclei of the final elements are
always
A. more stable.
B. increased in mass.
C. half as radioactive.
D. positively charged.
A. more stable.
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Radioactivity for $500
Which would penetrate a car
door made of aluminum?
A. Alpha particles
B. Beta particles
C. Gamma rays
D. Helium nuclei
C. Gamma rays
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Energy for $100
Nuclear fission produces
energy when __
A. Two atomic nuclei combine
B. An atomic nucleus splits
C. A chemical reaction occurs
D. Helium transmutes into
hydrogen
B. An atomic
nucleus splits
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Energy for $200
Turbines from a hydroelectric
dam convert what type of
energy into electrical energy?
A. Chemical
B. Sound
C. Mechanical
D. Light
C. Mechanical
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Energy for $300
Two 1kg apples hang from a
tree branch, one near the top
of the tree and the other on a
lower branch. Which apple
has the most gravitational
potential energy?
The apple near
the top of the tree
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Energy for $400
Which of the following is an example of
light energy being converted into chemical
energy?
A. The sun unevenly heating Earth’s
surface
B. Water evaporating and condensing in
the water cycle
C. Plants producing sugar during the day
D. Lava erupting from volcanoes for
many days
C. Plants
producing sugar
during the day
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Energy for $500
How can you increase
the kinetic energy of a
pickup truck without
increasing the truck’s
speed?
Increase the
truck’s mass
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Heat for $100
The transfer of heat by the
movement of air currents in Earth’s
atmosphere is an example of —
A. conduction
B. convection
C. radiation
D. fusion
B. convection
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Heat for $200
Between points 2
and 3, energy is
being used to —
A.
B.
C.
D.
melt ice
heat water
evaporate water
heat water vapor
A. melt ice
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Heat for $300
A man who was sleeping wakes up because
he hears the smoke alarm go off in his
house. Before opening the bedroom door,
the man feels the door to see whether it is
warm. He is assuming that heat would be
transferred through the door by —
A. conduction
B. convection
C. radiation
D. compression
A. conduction
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Heat for $400
Ms. Markas takes a thermos bottle filled
with hot coffee to work each day. The
thermos bottle keeps the coffee hot by
A.
B.
C.
D.
Using a battery powered heating element
Collecting solar heat energy
Recirculating hot air inside
Slowing heat transfer
D. Slowing heat
transfer
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Heat for $500
Suppose four pieces of metal,
with masses 10g, 100g, 500g,
and 1kg, are heated.
According to the equation
Q=mct, which piece of metal
requires the most heat energy
to go from 10 oC to 20 oC?
1 kg piece of
metal
(remember 1 kg = 1000 g)
How much do you
want to risk?
What are 3 things you
can do to help make
sure you do well on
your GHSGT?
1. Pay attention in class
and study
2. Get plenty of rest
3. Eat a good breakfast
Which team won?