Magnetic Reversal

Which of the following supports the theory of seafloor spreading?

• Correlation of rock layers

• Crustal Age

• Magnetic Reversal

• Continuous Mountain Chains

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Magnetic field that points south.

• Modern polarity

• Past polarity

• Normal polarity

• Reversed polarity

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

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.HS-PS2-5

Magnetic reversal or Magnetic _____ of the Earth

• flip

• compass

• field

• none of the above

How many years ago did Earth's magnetic poles last reverse?

Magnetic reversal is also called ______

• Magnetic stripes

• Magnetic poles

• Magnetic flip

• Magnetic field

Magnetic reversal signs are found in which of the following tectonic setting?

• Convergent

• Divergent

• Transform

• Sliding

Tags

NGSS.HS-ESS1-5

Takes place when Earth's magnetic field changes

• magnetic reversal

• mid-ocean ridge

• normal polarity

• reversed polarity

• seafloor spreading

Magnets point south when Earth's magnetic field has this

• magnetic reversal

• mid-ocean ridge

• normal polarity

• reversed polarity

• seafloor spreading

Magnetic bands on the ocean floor are evidence that Earth’s magnetic field changes.

• TRUE

• FALSE

Tags

NGSS.HS-PS2-5