Why can both P and S waves travel through the mantle?
The mantle is not very far below the Earth's surface.
Parts of the mantle are solid and other parts are liquid.
The mantle is a solid.
The mantle is a liquid.
Why is the inner core solid?
Because it is under too much pressure to melt.
Because it consists mostly of silicon.
Because of plasticity.
Because it is very hot.
Which statement about the four spheres of Earth is true?
They occur in the same place, but do not interact.
They describe distinct layers of Earth's interior.
They often occur in the same place and interact.
Scientists think there are more than four spheres of Earth.
How do we know that seismic waves have reached a new layer in the Earth's interior?
They change speed as they reach different layers.
They travel all the way to the core before bouncing back.
They get bounced back when they reach the mantle.
Nothing happens, they simply travel through.
We look up in the sky and see a cloud. Which sphere is this cloud in?
The hydrosphere only
The geosphere only
The atmosphere only
Both the hydrosphere and atmosphere
Which parts of the Earth are contained in the lithosphere?
The lower mantle and the crust.
Both the inner and outer core.
The upper mantle and the crust.
The outer core and lower mantle.
Which of the following is NOT a reason that sphere interactions are important?
They change matter through different phases.
They help to keep matter in one place.
They form the overall system of Earth.
They recycle material on Earth.
Why is rain not part of the atmosphere?
Because it is part of the geosphere.
Because it is part of the biosphere.
Because it is part of the hydrosphere.
Because it moves between spheres.
What happens to P waves when they reach the outer core?
They speed up because it is solid.
They slow down because it is solid.
They slow down because it is liquid.
They speed up because it is liquid.
Which of the following is true about the Hawaiian islands?
There is no order to their age.
none
The islands are all the same age.
The islands get older as you travel northwest.
Which of Earth's interior layers is liquid iron?
The mantle
The outer core
None are liquid
The inner core
How does the inner core differ from the outer core?
The inner core is very cold while the outer core is very hot
The inner core is solid, while the outer core is liquid.
The inner core is made of iron the outer core is lithium
The inner core is characterized by plasticity.
Which of these is part of the Earth's lithosphere?
Hydrosphere
Crust
Core
Liquid Mantle
If scientists can ONLY detect P waves in a certain layer of the Earth's interior, what does that tell us?
We know that the layer is solid.
We know that the layer is liquid.
We know that the layer is the mantle.
We know that the layer could be either liquid or solid.
The interior of the Earth is part of which sphere?
The hydrosphere
The atmosphere
The geosphere
The biosphere
Which of these is NOT one of the four spheres of Earth that are said to drive all its processes and support life on the planet?
Geosphere
Atmosphere
Lithosphere
Hydrosphere
Why are plants and animals part of the biosphere?
Because all living things are part of the biosphere.
Because they live on the ground.
Because they can travel in the air.
Because they can migrate.
How can you tell where one sphere ends and the next one begins?
You look it up in a textbook.
There are no hard rules, and often spheres overlap.
You calculate which sphere is more involved.
You find the exact point where they meet.
Which is NOT one of Earth's four spheres?
The geosphere
The biosphere
The troposphere
The hydrosphere
A plant rooted in the ground has a connection to which sphere(s)?
Biosphere and hydrosphere only
Geosphere, biosphere, hydrosphere, and atmosphere
Hydrosphere, atmosphere, and geosphere
Biosphere only
What is the name of the Earth's outermost, 60-mile-thick, layer?
Hydrosphere
Lithosphere
Biosphere
Asthenosphere
Which of the following events is LEAST likely to trigger a tsunami?
Rock weathering in the Northwest Hawaiian Islands
A volcanic eruption on the Big Island of Hawaii
An underwater earthquake that causes a plate to move upwards
An underwater landslide
What is the cause of earthquakes, volcanoes, and mountains on Earth?
Convection currents in the crust.
Convection currents in the mantle.
Movements in the outer core.
Sinking of the oceanic crust.
How are mantle plumes and hot spots related?
Hot spots erupt and form mantle plumes.
Hot spot is another word for mantle plume.
Mantle plumes rise & break through the crust, make hot spots
None are correct