Continental Drift/Sea Floor Spreading pre/post test

What does this evidence tell us about the age of the ocean floor?

• New seafloor is destroyed almost as soon as it's created making dating difficult.

• The newest seafloor is being created at the ridges and the floor gets older as you move further away.

• The seafloor is newest at underwater trenches and ages as it spreads to the ocean ridges.

• The seafloor moves in a circular pattern around the continents.

Tags

NGSS.MS-ESS2-3

What evidence do ocean ridges provide that support the theory of continental drift?

• Ocean ridges cause old seafloor to collapse.

• Ocean ridges are formed due to earthquakes.

• New seafloor is being created at ocean ridges.

• Pressure within the mantle does not cause new seafloor to solidify.

Tags

NGSS.MS-ESS2-3

Which of the following best describes where the youngest and oldest crustal rocks can be found on the Earth?

• The oldest crustal rocks are found high in the mountains and the youngest at sea level.

• The oldest crustal rocks are found at the edges of continents and the youngest in the center.

• The oldest crustal rocks are found on continents and the youngest on the ocean floor.

• The oldest crustal rocks are found at the North and South Pole and the youngest at the equator.

Tags

NGSS.MS-ESS1-4

Using the image on the left, which of the following shows the most likely locations from which these rock samples were taken?

• 
• 
• 
• 

Tags

NGSS.MS-ESS2-3

Not all the crustal rock found on the earth is the same age. Some of it is younger than 200 million years old, while other crustal rock can be as old as 4 billion years. Which Earth processes are most responsible for the difference in ages?

• Weathering and erosion by moving wind, water, and ice

• Changes that rocks experience when exposed to heat and pressure

• The different rates at which molten minerals cool and form crystals

• Destruction and renewal of rock at tectonic plate boundaries

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

The table shown here provides information on the ages of samples of crustal rocks taken from different locations on Earth. Which of the following is the best prediction of where these rock samples were taken from?

• samples 2 & 4 = continental rock; samples 1 & 3 = ocean floor rock

• samples 1 & 4 = continental rocks; samples 2 & 3 = ocean floor rock

• samples 1 & 2 = continental rock; samples 3 & 4 = ocean floor rock

• samples 2 & 3 = continental rock; samples 1 & 4 = ocean floor rock

Tags

NGSS.MS-ESS1-4

Which of the following observations can best be explained by plate tectonics?

• The difference in ages of crustal rock in different locations on the earth

• The sorting of sediments from smaller to larger particles on coastlines

• The shapes and sizes of rock formations found in caves

• The layering of sedimentary rock with youngest on top and oldest on the bottom

Tags

NGSS.MS-ESS2-3

Label the parts of the plate boundary

a

b

c

Continental crust

Mountains

Subduction zone

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Match the following

• Continental rifting

• process in which two lithospheric plates of different densities converge and the denser one sinks into the mantle beneath the other

• Transform boundary

• A plate boundary where two tectonic plates move toward each other and collide

• Subduction

• The process by which a continent is pulled apart at a divergent plate boundary

• Convergent boundary

• A plate boundary where two tectonic plates slide horizontally past one another

• Divergent boundary

• A plate boundary where two tectonic plates move apart from each other

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

According to the graph, how many kilometers from the Mid-Atlantic Ridge are rock samples that are 75 million years old? ​

​ (a)  

• 1,150 Km
• 3 Km
• 1,300 Km
• 800 Km
• 1,000 Km

Tags

NGSS.HS-ESS1-5