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WorksheetsPeriod 8 Standard Earth Science Unit 5 Study Guide
Total questions: 25
Worksheet time: 14mins
Name
Class
Date
1.
Which animal part would MOST LIKELY form a fossil?
a)
fur
b)
lung
c)
bone
d)
muscle
2.
Why do bones and teeth remain as part of some fossils?
a)
they are white
b)
bones are large
c)
the parts are hard
d)
bones decay easily
3.
Fossils of fish are found under land where cows now live. What does this tell you?
a)
the fish were dropped their by flying birds
b)
this land was once under the ocean
c)
farmers fed the fish to the cows
d)
fish used to live on land
4.
A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together. This is the best rock for preserving fossils.
a)
igneous
b)
sediment
c)
erosion
d)
sedimentary rock
5.
These are formed when external molds are filled with sediment and are a 3D form of organism.
a)
Casts
b)
Mummification
c)
Internal molds
d)
Petrification
6.
These occur when over time all parts of the original organism except the carbon are removed from the fossil over time. The remaining carbon is the same carbon that the organism was made of (usually a plant or a small insect).
a)
Carbonization
b)
Petrification
c)
Replacement
d)
Internal molds
7.
Fossils that aren't exactly part of the organism. These include footprints, burrows, eggshells, and my personal favorite, coprolite (or fossilized excrement).They give insight into an organism's behavior.
a)
Trace fossils
b)
Actual remains
c)
Recrystallization
d)
Replacement
8.
These are much rarer than other fossil types. These are still intact parts of the organism. Actual remains can be seen preserved in ice, tar, or amber. A good example is mammoth hair. It is often frozen and still preserved.
a)
Direct Evidence
b)
Tar
c)
Trace fossils
d)
Replacement
9.
What type of fossil is this?
a)
Mold
b)
Cast
c)
Trilobite are awesome
d)
trace fossil
10.
What type of fossil is this?
a)
Mold
b)
Carbon flim
c)
Cast
d)
Original Remains
11.
These are dinosaur footprints. What is this a example of?
a)
All of the below!!!!!
b)
index fossil
c)
permineralized remains
d)
trace fossil
12.
An______is an organism that lived for a short amount of time , were plentiful, and lived in a wide geographical area.
a)
index fossil
b)
I don't know fossil
c)
perserved fossil
d)
CHEAT
13.
What type of fossil is this?
a)
Amber (Direct Evidence)
b)
replacement of mineral matter
c)
molds,casts,imprints
14.
What type of fossil is this?
a)
preservation of actual remains
b)
Petrification of wood
c)
molds,casts,imprints
15.
How many protons does U 235 atom have ?
a)
235
b)
92
c)
143
d)
67
16.
The radiation detected from a piece of rock is reduced significantly when the rock is wrapped in a thin sheet of aluminum or lead foil. What type of radiation is being emitted?
a)
Alpha
b)
Beta
c)
Gamma
d)
none of the above
17.
The radioactivity of a radioactive substance:
a)
increases with time
b)
increases then decreases with time
c)
decreases with time
d)
stays the same with time
18.
Which of the following is a way that radiation is NOT helpful?
a)
Used in medical research
b)
Treating certain illnesses
c)
Energy production
d)
Damages human cells
19.
What makes an element radioactive?
a)
When it's nuclei expands
b)
When it's electrons explode
c)
When it's nuclei behave
d)
When it's nuclei decay
20.
Which of the following is a way that radiation is NOT harmful?
a)
Used to treat certain illnesses
b)
Damages cells
c)
Causes illness
d)
Causes death
21.
When nuclei decay, massive amounts of __________ is released.
a)
energy
b)
jello
c)
protons
d)
neutrons
22.
Gamma rays damage human cells/tissue.
a)
True
b)
False
23.
Has a moderate penetrating power. It can go into human body tissue and can be stopped by metal foil.
a)
Alpha
b)
Beta
c)
Gamma
24.
Electromagnetic radiation made of high-energy waves or rays. It can be stopped by a thick sheet of lead.
a)
Alpha
b)
Beta
c)
Gamma
25.
Radiation that releases a helium nucleus (2 protons and 2 neutrons) and cannot pass through a sheet of paper or human skin.
a)
Alpha
b)
Beta
c)
Gamma
d)
Neutron
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