Review PPT - Moon, Earth and Dating
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Transcript Review PPT - Moon, Earth and Dating
1. Archaeologists use the half-life of
_____ to date organic materials.
A.carbon-12
C.carbon-14
B.uranium-235
D.uranium-238
2. Radioactive materials have unstable
A.electrons.
C.protons.
B.nuclei.
D.neutrons.
3. The process of nuclear change in an
atom of radioactive material is called
A.radioactive decay.
C.nuclear mass.
B.isotopes.
D.radon.
4. Nuclei with too many or too few
neutrons are
A.never found.
C.unnatural.
B.unstable.
D.stable.
5. In radioactive decay, with each halflife, half the remaining sample decays to
form another
A.nucleus.
C.life-form.
B.element.
D.proton.
6. All planets in the solar system revolve
around
A.the sun.
C.Jupiter.
B.Earth.
D.Mars.
7. The moon orbits
A.Earth.
C.Saturn.
B.the sun.
D.Mercury.
8. Tides on Earth are caused primarily
by
A.the moon’s gravitational force.
C.Earth’s landscape.
B.the sun’s gravitational force.
D.Jupiter’s gravitational force.
9. _____ is the only planet in the solar
system known to sustain life.
A.Uranus
C.Earth
B.Mercury
D.Pluto
10.Earth’s atmosphere protects it from
A.high-energy solar particles.
C.space debris.
B.ultraviolet radiation.
D.All of the above
11.Astronomers believe _____ was
originally a part of Earth.
A.the sun
C.Jupiter
B.the moon
D.Mars
12.According the current theory, the
moon was formed
A.together with Earth.
C.from a portion of Earth.
B.separately from Earth.
D.from leftover matter.
13.The moon’s surface is covered with
A.craters.
C.ice.
B.oceans.
D.an atmosphere.
14.When the moon is full, the _____ is
between the _____ and the _____.
A.moon, sun, Earth
C.Earth, moon, sun
B.sun, Earth, moon
D.moon, sun, Mercury
15.The age of our solar system is
approximately
A.2,000 years old.
C.4.6 billion years old.
B.46 billion years old.
D.13.7 billion years old.
16.A rock that strikes the Earth is called
a
A.meteor.
C.meteoroid.
B.meteorite.
D.All of the above
17.During a solar eclipse
A.the moon blocks out the sun.
C.the moon blocks out Earth.
B.the sun blocks out the moon.
D.Earth blocks out the sun.
18.During a lunar eclipse
A.the moon blocks out the sun.
C.the moon blocks out Earth.
B.the sun blocks out the moon.
D.Earth blocks out the sun.
19._____ allow Earth to sustain life.
A.Liquid water and an oxygen-rich
atmosphere
B.Animals and plants
C.The moon’s craters and maria
D.Ice and a methane-rich atmosphere
20.The principle that uses the position to
determine the relative age of rock layers
is called the
A.law of cross cutting
C.law of superposition
B.Newton’s Law
D.law of horizontality
21.Half lives are used to determine the
_____________ age of rocks.
A.relative
C.youngest
B.absolute
D.oldest
22.The principle that states that a layer
of rock that cuts across other layers of
rock is younger than the rock it cuts
through is called the
A.law of cross cutting
C.law of superposition
B.Newton’s Law
D.law of horizontality
23. A wooden boat is found buried in the
ocean. Scientists believe that timbers
making up the boat had 10mg of carbon14 in them when alive. They now have
2.5mg of carbon-14. How old is the boat
if the half life of carbon-14 is 5715
years?
24. Potassium-40 has a half-life of 1.3
billion years. If I have a sample which
weighs 80 grams, how long will it take
for the sample to have only 5 grams of
potassium-40 left?
25. The half-life of thorium-230 is 2.25
million years. I have a sample which
originally contained 20kg of thorium-230,
but now only contains 5 kg of thorium230. How old is my sample?