Evidences of Plate Movements

what evidences do scientist use to support the continental drift theory?

• rocks , fossils, air

• rocks,water,ice

• rocks,fossil, climate

• rocks,fossils,human beings

the youngest the crust is found _____ the mid ocean ridge

• far

• near

• beside

• away

if you are a carthographer,what would you give an idea that the continents were once joined?

• ocean depth

• shape of the continents

• position of the south pole

• size of the Atlantic Ocean

what discovery provided strong support for continental drift theory

• geology

• fossil evidence

• electromagnetism

• paleomagnetism

which is NOT an evidence of seafloor spreading

• molten magma constantly erupting

• drilling samples of rock

• fossil evidence

• magnetic stripes

the magnet point north when magnetic field has _____

• magnetic reversal

• reversed polarity

• mid ocean ridge

• normal polarity

What do you call the process that forms and moves new oceanic crust?

• magnetic reversal

• seafloor spreading

• convection

• trenching

What do you call the supercontinent landmass formed million years ago?

• Pangea

• Panthalassa

• Asia

• Eurasia

He is a German Scientist who hypothesized in 1912 that continents were once a giant landmass called Pangaea.

• Harry Hammond Hess

• Robert Dietz

• Alfred Lothar Wegener

• Charles Darwin

Why were magnetic patterns found on the ocean floor puzzling?

• They did not show alternating bands of normal and reversed polarity.

• They showed alternating bands of normal and reversed polarity.

• No rocks were magnetic.

• All rocks were magnetic.