SEAFLOOR SPREADING

In the Atlantic ocean, where is the youngest seafloor located?

• Towards the edges, near the eastern and western continents
• Towards the middle of the ocean
• Towards the north and south poles
• Young seafloor is located randomly throughout the ocean

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Which of the following supports the theory of seafloor spreading?

• Correlation of rock layers
• Crustal Age
• Magnetic Reversal
• Continuous Mountain Chains

Tags

NGSS.MS-ESS2-3

When looking at mid ocean ridges the oldest rocks are 

• In the middle
• Found close to the rift zone
• Found far from the mid ocean ridges

Tags

NGSS.HS-ESS1-5

What 3 kinds of evidence were used to prove that the seafloor spread?

• Rock formations, age of rocks, WWII shipwrecks

• Age of rocks, magnetic seafloor stripes, WWII ship logs

• Rock formations, magnetic seafloor stripes, age of rocks

Tags

NGSS.MS-ESS2-3

Magnetic field that points south.

• Modern polarity
• Past polarity
• Normal polarity
• Reversed polarity

Tags

NGSS.MS-PS2-5

Why were magnetic patterns found on the ocean floor puzzling?

• They showed alternating bands of normal and reversed polarity.
• No rocks were magnetic.
• They did not show alternating bands of normal and reversed polarity.
• All rocks were magnetic.

Tags

NGSS.MS-ESS2-3

Sea-floor spreading begins at the

• Deep ocean trench

• Mid-ocean ridge

• Continent's edge

Tags

NGSS.MS-ESS2-3

Which is NOT evidence of sea-floor spreading?

• Molten magma constantly erupting
• Drilling samples of rock
• Magnetic stripes
• Fossil evidence

This scientist was the first to propose seafloor spreading

• William Watts

• Harry Hess

• Alfred Wegener

• Tenzing Norgay

Tags

NGSS.MS-ESS2-3

Magnets point north when Earth's magnetic field has this?

• magnetic reversal

• mid-ocean ridge

• normal polarity

• reversed polarity

• seafloor spreading