Seafloor Spreading Activity
Passage
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Medium
+3
Standards-aligned
Kyla Plumlee
Used 2+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do basalt magmas contain that aligns with Earth's magnetic field?
Molten gold
Molten iron
Molten silver
Molten copper
Tags
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many times has the Earth's magnetic field reversed during the past four million years?
Eleven times
Nine times
Seven times
Five times
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Approximately when did the current interval of normal polarity begin?
600,000 years ago
500,000 years ago
800,000 years ago
700,000 years ago
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are the magnetic stripes on the sea floor parallel to and symmetrical across the mid-ocean ridge?
Because new crust forms and spreads away from the ridge
Due to the Earth's rotation
Because of ocean currents
Due to wind patterns
Tags
NGSS.MS-ESS2-1
NGSS.MS-ESS2-2
NGSS.MS-ESS2-3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a potential risk of mining on the Mid-Atlantic Ridge?
Lack of minerals
Geological instability
Too close to land
No marine life
Tags
NGSS.MS-ESS3-2
NGSS.MS-ESS3-4
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