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Layers of Earth and Rock Cycle - 7th Grade Science Flashcards | StudBud
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Layers of Earth and Rock Cycle - 7th Grade Science
Layers of Earth and Rock Cycle - 7th Grade Science
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A 7th grade science quiz covering the layers of Earth and the rock cycle.
Flashcards
31 cards
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Practice quiz
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Questions
31
Answers
1
250g of Carbon-14 decomposes for one half-life. How much Carbon-14 would remain?
125 grams
62.5 grams
200 grams
150 grams
2
This layer of Earth is under intense pressure.
Crust
Mantle
Outer Core
Inner Core
3
This type of rock forms due to intense heat and pressure.
Sedimentary
Metamorphic
Igneous
4
The portion of the crust that is made up of plates that slide around.
Biosphere
Lithosphere
Atmosphere
Hydrosphere
5
These types of rocks are made up of crystals.
Sedimentary
Igneous
Metamorhpic
6
T/F: Intrusive and extrusive igneous rocks both contain crystals.
True
False
7
Terrestrial means...?
Animals live on the planet
The planet is made primarily of rock
The planet is made primarily of gas
Water can be found on the planet
8
Which layer of Earth is the thickest layer of the Earth?
Crust
Mantle
Inner Core
Outer Core
9
Which layer of Earth consists of the lithosphere?
Mantle
Crust
Inner Core
Outer Core
10
The half-life of radium-222 is 38 sec. How much would be left after 76 sec if you had 12 grams.
7 grams
3 grams
5 grams
1 gram
11
Which layer of the Earth is made up entirely of liquid?
Inner Core
Outer Core
Mantle
Crust
12
T/F: Intrusive igneous rocks form outside the Earth.
False
True
13
T/F: Extrusive igneous rocks form above Earth's surface.
False
True
14
Which layer of Earth consists of the land and the ocean floors?
Mantle
Crust
Outer Core
Inner Core
15
Ths type of rock can contain fossils, but they are distorted.
Sedimentary
Metamorphic
Igneous
16
Which of the following is necessary for the process of photosynthesis to occur?
sugar
fertilizer
carbon dioxide
oxygen
17
The half-life of Carbon-14 is how many years?
5000 years
57 years
7000 years
5700 years
18
This type of rock forms as a result of erosion.
Igneous
Metamorphic
Sedimentary
19
Scientist can find the ___ age by using radioactive elements like Carbon-14 & Uranium-238.
Relative
Absolute
20
Which layer of Earth is composed of plates that move around on top of the layer below it?
Mantle
Inner Core
Outer Core
Crust
21
This type of rock is made up of layers.
Metamorphic
Igneous
Sedimentary
22
The Inner Core & Outer Core of Earth are made up of ...
diamonds & rubies
copper & zinc
gold & silver
nickel & iron
23
What layer of Eath makes up about 2/3 of the Earth's mass?
Outer Core
Mantle
Inner Core
Crust
24
This type of rock can form above or below Earth.
Metamorphic
Igneous
Sedimentary
25
The earliest life on Earth were known as...?
Probiotics
Prokaryotes
Picadegallo
Eukaryotes
26
Prokaryotes are...
super-charged organisms
multi-celled organisms
single-celled organisms
27
This type of rock is made up of pieces of other rocks.
Sedimentary
Igneous
Metamorphic
28
This type of rock cannot contain fossils.
Igneous
Sedimentary
Metamorphic
29
500g of Carbon-14 is left to decompose. In how many yrs would this amount be reduced to 125g?
5,700 years
142,500 years
11,400 years
8,550 years
30
This type of rock is formed from cooling magma.
Igneous
Metamorphic
Sedimentary
31
T/F: Intrusive and extrusive igneous rocks both form from cooling magma.
True
False
