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WorksheetsGeological Time
Total questions: 18
Worksheet time: 22mins
Which letter matches with the OLDEST layer of rock?
W
X
Y
Z
Scientists use radioactive decay to measure...
relative time
absolute time
age of trees
time of day
The Earth is how old
3.5 Billion years old
3.6 Billion years old
4.5 Billion years old
4.6 Billion years old
What helps geologists match rock layers, and determine the relative ages of the rocks.
Index fossils
fossil fuels
Index rocks
Which two living things would he find in the Mesozoic era? Can pick more than one.
flowers
amphibians
dinosaurs
coral reef
humans
In what era did the first land plants appear?
Silurian
Mesozoic
Paleozoic
Thicker tree rings indicate poor growing conditions for plants and trees.
True
False
Warm temperatures and plenty of rainfall cause
micro rings
parallel rings
wide rings
thin rings
How old is this tree?
13 years old
26 years old
5 years old
10 years old
Why would a tree have a scar?
drought
too much sunlight
insect attack, fire or broken limb
it was sad
The % of the parent isotope remaining after 3 Half Lives.
50%
25%
12.5%
6.25%
The % of the parent isotope remaining after 1 Half Life.
50%
25%
12.5%
6.25%
What is the Half life of this isotope?
5 seconds
10 seconds
15 seconds
20 seconds
What is this rock formation an example of?
Original horizontality
lateral continuity
faunal succession
cross cutting relationships
What principle is this rock showing?
original horizontality
cross cutting relationship
inclusion
lateral continuity
