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Quarter 2 Test
Rock Cycle, Earth Timeline, Fossil Fuels, Carbon
20
Science
8th Grade
12/08/2022

Additional Science Flashcards

 


 

Cards

Term
Rock Cycle
Definition
Classified into (3) major groups based upon how they are formed
Term
Igneous Rock
Definition
Formed from cooling of magma, how Hawaii was formed
Term
Metamorphic Rock
Definition
Formed from heat/pressure creates crystals
Term
Sedimentary Rock
Definition
Created from broken down rock which creates sediment that is compacted/cemented
Term
Weathering
Definition
Rocks are broken down by wind/rain
Term

[image]

which is an index fossil?

Definition

Index fossil: found across ALL deposits, only in ONE layer

 

(ammonite)

Term
When was the earth created?
Definition
4.5 billion years ago
Term
How long have modern humans been alive?
Definition
100,000 years
Term
Earth's natural greenhouse gases
Definition
Carbon Dioxide, Methane, Nitrous Oxide
Term
Fossil Fuels
Definition
Coal, Oil, Natural Gas
Term
Fossil Fuels source
Definition
Remains of living organisms (dinosaurs)
Term
Main source for CO2 increase in past 150 years?
Definition
Increase in burning of fossil fuels
Term
Greenhouse Gases
Definition

-Created from burning of fossil fuels

-Acts like a blanket trapping sun's heat

-Occur naturally on Earth

Term
Non-renewable resource
Definition

Cannot be replaced

(fossil fuels, plastics)

Term
Renewable Resources
Definition

Can be replaced

(paper/trees)

Term
What causes sea levels to rise?
Definition

Warmer temperatures

(thermal expansion)

Term
Carbon Sinks
Definition
Deforestation, Plants for Photosynthesis, Sedimentary Rock
Term
Carbon Sources
Definition
Burning Fossil Fuels, Respiration
Term
Carbon
Definition

-CO2 continues to recycle

-Carbon stored in forests, soil. oceans, atmosphere

-carbon cycle: system of sinks/sources

-land plants>CO2>photosynthesis

-humans>CO2>energy

Term
Global Warming
Definition
Issue that affects ALL life on Earth
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