Science 8 Earth's interior and plate tectonics review

The Earth's inner core is

• A ball of plasma

• A solid of mostly iron

• Liquid lava

• Hotter than the sun

The lithosphere is...

• The crust and upper mantle of the Earth

• The lower mantle

• The continental crust

• The oceanic crust

Tags

NGSS.MS-ESS2-1

Which layer of crust is more dense?

• The continental crust

• The volcanic crust

• The oceanic crust

• The mountainous crust

The plastic like rock layer just below the lithosphere is called the...

• inner core

• upper mantle

• lower mantle

• asthenosphere

True or false: the layers in the Earth get more dense as you go from the surface to the inner core.

• true

• false

The movement created by hotter less dense material rising and cooler, more dense material sinking is called...

• cohesion current

• convection currents

• conduction current

• mantle movement

Tags

NGSS.MS-ESS2-6

The theory of plate tectonics says that plates are moved by

• magnetic fields

• the Moon's gravity

• convection currents in the mantle

• convection currents in the inner core

Tags

NGSS.MS-ESS2-3

How do scientists study magma?

• They drill holes into the mantle and remove samples.

• They study lava samples from volcanoes.

• They study magma samples from Earthquakes.

• They collect magma from the moon

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

How do we know what is inside the Earth?

• A large slice was removed with a giant knife for scientists to study.

• The borehole in Russia extended to the inner core.

• Satellite photographs mapped the interior of the Earth

• Seismic waves from Earthquakes and volcanoes travel through the Earth and can be measured.

The seafloor was mapped using

• sound waves

• ocean currents

• ocean tides

• satellite images of the seafloor

Tags

NGSS.MS-PS4-2