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100
Where is the deepest mine? What kind of mine is it? And how deep is it?
South Africa, GOLD, 3.8KM
100
T/F Geologists cannot observe the Earth’s interior directly.
TRUE – They can only observe it INDIRECTLY
100
How do Geologists indirectly study Earth’s interior?
Seismic Waves
100
What are seismic waves?
Vibration that travels through earth’s carrying the energy released during an Earthquake.
100
When you travel beneath the earth, describe the change in TEMPERATURE.
It gets hotter. 20 meters from the crust, it gets warmer. For every 40 meters that you go down from that point, the temperature rises 1 degrees Celsius. After that the temperature increases more slowly, but steadily.
200
What is pressure?
Pressure is the force pushing on surface area.
200
How does pressure change as you travel toward the earth’s center? And why?
The deeper you go, the greater the pressure. The reason for this is because pressure is the force pushing on the surface or area (because of the weight of the rocks above increases as you go deeper)
200
What is lithosphere? And how thick is it?
It is rigid layer mantle and crust fuse. 100km thick
200
What is the outer core?
The outer core is a layer of molten metal
200
What is heat transfer?
Heat transfer is movement of energy from a warmer object to a cooler object
300
How many layers make up the Earth’s Interior? Name them.
3 – Crust, Mantle, and Core
300
Describe the thickness of the Earth’s crust, and compare it to the other layers?
Earth’s crust is very thin. It ranges from 5 – 40 km thick.
300
What is the asthenosphere? And why is it soft?
It is the soft layer beneath the lithosphere. Because it of the heat.
300
What is the inner core?
Inner core is a dense ball of solid metal
300
What are the three types of heat transfer?
Conduction, Convection and radiation.
400
What is the crust?
The crust is the layer of rock that forms Earth’s outer skin.
400
What is the Oceanic crust? And what is it made up of?
Crust beneath the Ocean. It is made up of dense rocks. An example is Basalt.
400
How does the material from the lithosphere differ from that of asthenosphere?
Lithosphere – harder...Athenosphre is softer
400
The outer and inner cores make up _________________________ of earth’s mass, but only _____________ percent of its volume.
One third...15
400
What is radiation? Give an example.
Radiation is transfer of energy through empty space. Ex; SUN
500
What can you find on the Earth’s crust?
Rocks and mountains, soil, water.
500
What is the mantle?
A layer of hot rock
500
The core consists of two parts, what are they called?
Outer core and inner core
500
What creates the Earth’s Magnetic field?
The core of the core causes magnetic field. The current in the liquid outer core force the solid inner core to spin at a slightly faster rate from the others.
500
What is conduction? Give an example.
Transfer by direct contact of particles of matter. Ex: heat on a metal spoon from a boiling pot of soup.