Earth’s Interior Jeopardy Earth’s Layers Magnetism Convection Grab Bag 100 200 300 400 500

What is the layer of the Earth with the highest density? The asthenosphere The inner core The lithosphere The outer core Category 1 - 10

Which method is NOT used to study the Earth’s interior? Analysis of the Earth’s magnetic field. Analysis of seismic waves from earthquakes. Analysis of lava. Analysis of samples collected from the drill hole that extends to the outer core. Category 1 - 20

The asthenosphere is interesting because… It creates the magnetic field. It is the source of Earth’s heat. It is a solid with liquid properties. It consists of 13 tectonic plates.

Why does density increase as you move towards the center of the Earth? It doesn’t, it decreases. The sun’s radiation causes Earth’s layers to compact. Because temperature increases. Early in Earth’s history, denser elements sank towards the center.

The crust has cooled over time. The core of the Earth is hotter than the crust because… The crust has cooled over time. The core is generating heat from radioactive decay of some elements. The original heat generated from Earth’s formation is still in the core. All of the above.

The Earth’s magnetic field is generated in which layer? The lithosphere The inner core The outer core The asthenosphere

The Earth’s magnetosphere protects us from what? Greenhouse gases. Solar particles. Earthquakes. Asteroids.

Which of the following is NOT true about Earth’s magnetic field? It is a temporary magnet. It is an electromagnet. It extends beyond the Earth’s crust. It is a permanent magnet.

What is NOT true about the Northern and Southern Lights? They are created by meteorites burning up in the atmosphere. They occur at the magnetic poles of the Earth. They are created when solar particles trapped in Earth’s magnetic field collide with air.

What effect does the Sun have on Earth’s magnetic field? The Sun does not affect the Earth’s magnetic field. The Sun’s radiation makes the magnetic field hot. Solar winds distort the Earth’s magnetic field. The Sun’s magnetic field holds the Earth in its orbit.

Convection is responsible for what process on Earth? Plate tectonics Ozone depletion Magnetism Global warming

Convection currents rely on differences in: Pressure Temperature Phase Depth

In which layer of the Earth does the convection that drives plate tectonics occur? The asthenosphere The inner core The lithosphere The outer core

What drives convection in the asthenosphere? Temperature differences between the cooler lithosphere and warmer lower mantle Pressure differences between the lithosphere and lower mantle Temperature differences between the cooler lower mantle and warmer lithosphere Compositional differences between the lower mantle and lithosphere

When liquids and gasses become hotter than the surrounding matter, they … turn into solids and stop moving becomes less dense and rise give off visible light become more dense and sink

Could the Earth ever lose it’s magnetic field? No, the magnetic field never really changes. Yes, when the magnetic field reverses.

In what way did your electromagnet model NOT represent the Earth’s magnetic field? nail = inner core battery = sun coiled wire = outer core

Why is the Earth’s magnetic field invisible? It does not produce wavelengths in the visible spectrum. Because the visible light produced is traveling too fast. Because only heat energy is produced. The magnetic lines ARE visible with special equipment.

Why do gases on the Sun follow the Sun’s magnetic lines and why can you see them? The gases are very hot and are attracted to magnetic fields. The gases become charged and excited and get caught in the magnetic field. Because they are made of iron and become magnetized.

Could we breathe if we lost our magnetic field? Yes, we would still have our atmosphere. No, the solar winds would strip our atmosphere away. Scientists don’t really know the answer.