Earth History & Fossils Review

How does a fossil form?

• An organism dies and is buried in sediment layers over thousands of years

• An organisms becomes trapped in ice and it’s body stays frozen in it’s shape, preserving it’s body

• An organisms carbon film is stuck onto a rock

• All of the above.

What role have glaciers played in changing the way that Earth’s surface looks?

• a) They have made the oceans bigger

• b) They have created valleys and glacial landforms

• c) They have caused flooding

• d) They have changed the Earth’s temperature because they are so cold

Tags

NGSS.MS-ESS2-2

Match the following

• A dinosaur skeleton’s bones

• Preserved Remains

• Has a layer the organisms delicate parts, like the leaves of a plant

• Petrified Fossil

• Can be made from amber, ice, or tar

• Carbon Films

Tags

NGSS.MS-LS4-1

Match the following

• Forms when hard parts of an organism are buried in sediment

• Mold Fossils

• Forms as a result of a mold fossil, sediment fills the mold’s empty spaces to form this fossil

• Cast Fossils

• Could look like a footprint from a dinosaur

• Trace Fossils

A scientist found a fossil of a water snail deep under the Earth’s surface in a desert in Mexico. What does this tell you about what used to be in this desert?

• The fossils were formed from a volcanic eruption

• The fossils were moved there from a glacier

• There used to be an ocean or body of water there

• The fossils were buried by a little kid there.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

How has flooding changed Earth’s surface?

• It has created larger oceans

• Riverbanks have eroded and damaged, affecting the plants there

• It has caused earthquakes because the ground cannot support the flooding

• It has caused Earth’s surface to have more rain fall on it.

Tags

NGSS.MS-ESS2-2

True or False: Fossils can be hard to find because they can be buried very far underground, they are everywhere, including places that may not be visited often

Match each type of rock to how they are formed:

• weathering breaks it down into smaller pieces, they are carried away then are cemented together

• Metamorphic Rocks

• formed from magma and magma solidifies into rocks

• Sedimentary Rocks

• sedimentary or igneous rock can be buried deep into the Earth, heat and pressure bake the rock

• Igneous Rocks

Tags

NGSS.MS-ESS2-1

Where does the rock cycle process usually occur, and why does it start there?

• The ocean

• Glaciers

• Plate boundaries

• Tsunamis

Answer explanation

It begins along divergent plate boundaries, it is where the crust of the Earth’s plates are pulling apart, pushing magma up from the mantle, cooling down and forming new rocks.

Tags

NGSS.MS-ESS2-1

Why is it that you can find a fossil of a fish in one area, very deep under the earth, and then a few layers up, find a fossil of a dinosaur?

• The animal evolved

• There used to be an ocean there

• The animal moved from place to place

• I have no idea.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1