Earth History Test

Quiz
•
Science
•
8th Grade
•
Hard
+3
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following eras is known as the “Age of Mammals”?
Precambrian
Paleozoic
Mesozoic
Cenozoic
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The half-life of a radioactive element, such as carbon-14, is the time it takes for half of the atoms of the element to decay. How many half-life periods have passed if a fossil contains 1/8 of the original amount of carbon-14?
3
4
5
6
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The carbon in all living things includes the common isotope carbon-12 as well as the radioactive isotope carbon-14. When an organism dies, it stops taking in carbon. The carbon-14 it contains breaks down into another element, while the carbon-12 it contains remains constant. Half of the atoms in a sample of carbon-14 decay every 5700 years. Thus, the half-life of carbon-14 is 5700 years. Measurements of a fossilized skull indicate that it has a carbon-14/carbon-12 ratio that is equal to about 1/8 that of the skulls of present-day animals. Approximately how old is the skull?
5700 years old
11,400 years old
17,100 years old
22,800 years old
Tags
NGSS.HS-PS1-8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In what type of rock would a geologist MOST likely find evidence of ancient life?
sedimentary
igneous
metamorphic
volcanie
Tags
NGSS.MS-LS4-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What can be used to find the exact age of a rock specimen?
law of superposition
index fossils
radioactive dating
carbon dating
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the best description for how trace fossils are different from fossils of an organism’s remains?
Trace fossils are fossilized tracks, feces, and other evidences of an organism’s activity.
Trace fossils are the preserved body of an organism.
Trace fossils are hardened parts of the original organism.
Trace fossils are the carbon film left by the decaying organism.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which is used to find the relative age of a rock?
composition of rock layers
position of rock layers
carbon-14 dating
uranium dating
Tags
NGSS.MS-ESS1-4
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