Earth Layers
Double Points
What is the difference between erosion and weathering?
Weathering breaks down rocks; erosion moves the broken material.
What type of rock are most fossils found in?
Sedimentary rock
What are the three main types of rocks in the rock cycle?
igneous, sedimentary, and metamorphic rocks
What is causing an increase in natural hazards?
Global warming
What holiday is coming up?
Mardi Gras
What force primarily causes erosion by wearing away land?
Acid rain breaking down limestone or other chemicals
What are trace fossils?
Give an example for double points
They are fossils that show organism's activity like footprints, burrows, nesting, and/or feeces
How is sedimentary rock formed?
By the compaction and cementation of sediments
What is a tsunami and what causes it?
A large ocean wave caused by underwater earthquakes or volcanic eruptions
Double Points
Opal is created by weathered sandstone (rock), other minerals, and water. When the water evaporates, the sand and other minerals harden creating opal. What type of rock is opal?
*For an extra 200 pts, what evidence helped you determine the type of rock?*
Sedimentary rock.
Opal is made from broken sandstone which is sediment. sediment makes sedimentary rock.
How do glaciers cause erosion?
By scraping and carving out valleys as they move.
How can we use fossils to support evolution?
They show how organisms and enviornments change over time.
Double Points
What process turns sedimentary rock into metamorphic rock?
Heat and pressure
What is one-way humans can reduce their impact on the environment?
Using renewable energy sources like solar or wind power
Where is disney land located?
California
What challenges might arise when layers are disturbed by geological events? And what geological events disrupt rock layers?
Geologists would be unable to date rocks using relative dating. Erosion, weathering, volcanic eruptions, human activity, landslides, earthquakes, etc.
Which fossil should scientist use to date and compare other rock laters to estimate the age?
Fossil Y, because the organism existed over the shortest time range and the fossil is found in many different locations. Because they are unique those fossils will give us a better understanding of the fossil record.
What type of rock is formed when magma cools and solidifies?
Igneous Rock
How do natural hazards, human activity, and Earth’s systems interact to shape our planet?
Natural hazards change landscapes, human activities impact ecosystems, and Earth’s systems influence weathering, erosion, and the rock cycle.
When's 8th grade's last day of school?
May 14th.
How can the law of superposition be used to determine the relative age of rock layers?
The Law of Superposition states that in an undisturbed sequence of sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top. This principle allows geologists to determine the relative age of rock layers by examining their position in the sequence—layers deeper down must have been deposited first, making them older than the layers above.
Scientists find the same fossil species on two continents that are now thousands of miles apart. What does this evidence suggest?
The continents were once connected
How does the rock cycle relate to plate tectonics?
Movement of plates contributes to rock formation and recycling
Double Points
Opal (gem) mining is a very popular type of mining. The miners use heavy machines to harvest the opal. The harvesting destroys the area by increasing soil erosion and loss of habitat increasing biodiversity, and water contamination. What mitigation strategy could we do to make the environment better?
soil and water treatment, filling holes with removed soil, not using machinery and instead using harvesters, and replanting trees.
What is the differences in wave height and wavelength between tsunami waves in shallow water and tsunami waves in deep water?
Tsunami waves in deep water have very small wave heights and long wavelengths, while tsunami waves in shallow water have very large wave heights and short wavelengths.