E.8.9A.2

Last updated over 1 year ago

5 questions

1

In 1912, Alfred Wegener proposed the theory of "continental drift". His hypothesis was that the continents were once joined together, but had drifted apart over time to their present day positions. Which scientific phenomena strengthened Wegener's theory?

climate change

convection currents

permanentism

wave transmission

What is the name of the original supercontinent that scientist believe was separated due to Earth's tectonic plates?

Eurasia

Pangaea

Mesozoic

Greater Andria

Mountains are a result of natural events. How are mountain ranges, like the Himalayas, formed?

erosion by rain and wind

the impact of meteorites

Melting of glaciers over thousands of years

tectonic plates colliding and pushing upwards

Read the sentences below. German meteorologist Alfred Wegener was the first to suggest that the continents have moved over time. Wegener's theory was rejected at the time, in part, because he could not explain what caused the continents to move. Which of the following statements BEST describes how modern scientists explain the cause of lithospheric plate movement across the surface of the Earth?

Convection current within the plastic-like layer of the asthenosphere, the same basic process that happens when you heat water, moves the lithosphere plates on Earth.

The gases from the boiling liquid of the asthenosphere cause the plates to move on the surface of the Earth.

Tidal forces on Earth push the lithospheric plates about on top of the plastic-like layer of the asthenosphere.

The plates are attached to rocks made of magnetic materials; the magnetic forces of the Earth are attracted to the magnetic rock and act as the driving force that moves the plates on Earth.

Choose a word from the drop-down menu for each blank to complete the sentence below.
__________was a German geophysicist who formulated the first complete statement of the __________ theory. 

In 1912, Alfred Wegener proposed the theory of "continental drift".  His hypothesis was that the continents were once joined together, but had drifted apart over time to their present day positions.

Which scientific phenomena strengthened Wegener's theory?

climate change

convection currents

permanentism

wave transmission

What is the name of the original supercontinent that scientist believe was separated due to Earth's tectonic plates?

Eurasia

Pangaea

Mesozoic

Greater Andria

Mountains are a result of natural events. How are mountain ranges, like the Himalayas, formed?

erosion by rain and wind

the impact of meteorites

Melting of glaciers over thousands of years

tectonic plates colliding and pushing upwards

Read the sentences below.

German meteorologist Alfred Wegener was the first to suggest that the continents have moved over time.  Wegener's theory was rejected at the time, in part, because he could not explain what caused the continents to move.

Which of the following statements BEST describes how modern scientists explain the cause of lithospheric plate movement across the surface of the Earth?

Convection current within the plastic-like layer of the asthenosphere, the same basic process that happens when you heat water, moves the lithosphere plates on Earth.

The gases from the boiling liquid of the asthenosphere cause the plates to move on the surface of the Earth.

Tidal forces on Earth push the lithospheric plates about on top of the plastic-like layer of the asthenosphere.

The plates are attached to rocks made of magnetic materials; the magnetic forces of the Earth are attracted to the magnetic rock and act as the driving force that moves the plates on Earth.