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The History of Planet Earth 4th Grade Earth Science Flashcards | StudBud
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The History of Planet Earth 4th Grade Earth Science
The History of Planet Earth 4th Grade Earth Science
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#earthscience #science #4th #elementary #plates
Flashcards
22 cards
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Questions
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Answers
1
Tectonic plates:
Do not touch
Float on the mantle
Are very thin
Move
2
Oceanic crust is _____ than continental crust.
older
lighter
heavier
thicker
3
____ seeps up through cracks in tectonic plates, often at plate boundaries.
volcanoes
magma
crust
fossil
4
A ___ can be found where continental plates diverge.
ocean trench
mountain range
rift valley
mid-ocean ridge
5
Convergent Plates:
Are heavier than divergent plates
Are everywhere
Slide past one another
Push together
6
The Law of Superposition:
Helps geologists determine the relative age of rock layers.
Says that the colors in rock layers are a sign of age.
Says heavier rocks are further down than lighter rocks.
Helps geologists determine the exact age of rocks.
7
Which layer of the earth has magma?
volcanoes
divergent
crust
mantle
8
The layer just underneath the crust is the:
core
mantle
magma
sedimentary rocks
9
What forms from sediments building up in layers over many, many years?
sedimentary rock
fossils
mountain range
crust
10
When two plates converge and one moves under the other, this plate is:
Burning
Crunching
Sinking
Subducting
11
Which plates pull apart?
divergent
plate tectonics
convergent
mid-ocean ridge
12
What forms where two oceanic plates separate?
mountain range
volcanoes
ocean trench
mid-ocean ridge
13
Geologists study sedimentary rocks to learn about:
math
people
environments
compaction
14
What is the movement of plates that make up earth's crust?
divergent
plate tectonics
convergent
earthquakes
15
When tectonic plates move apart, it is called a:
Fault
Rift valley
Divergent boundary
Subduction zone
16
The most important characteristic of a sediment is:
Its color.
It soaks up color.
It floats in water.
It sinks to the bottom of water.
17
Which layer of earth has many sedimentary rocks?
sedimentary rock
mantle
mountain range
crust
18
Very old remains of plants or animals are called:
mantle
fossils
sedimentary rock
crust
19
The ring of fire contains many:
volcanoes
fossils
magma
rocks
20
Which of the following is true about earthquakes?
They do not disrupt rock layers.
They tend to occur around the Ring of Fire.
They are equally likely to happen anywhere on Earth.
They tend to occur near plate boundaries.
21
Fossils are:
Able to help determine how old rocks are
Found in the mantle
Living organisms
Always the same age
22
Mountain ranges are usually found where:
Plates form transform boundaries
Continental crust converges
Oceanic crust converges
Continental crust diverges
