Earth's Layers
How many layers does the Earth have?
What is an example of a rock scientists have found on the Earth's surface and studied?
An example of a rock scientists study is peridotite or kimberlite.
What are scientists who study seismic waves called?
Scientists who study seismic waves are called seismologists.
A team of international scientists are planning to do what?
A team of international scientists are planning to drill into Earth's Mantle.
How far is the inner core layer away from the crust?
The inner core layer is 6,400 km or 4,000 miles away away from the crust.
Scientists have been able to study materials from ____ kilometers (____ miles) below Earth's surface.
Scientists have been able to study materials from 11 kilometers or 7 miles away.
What are seismic waves?
Seismic waves are waves of energy
About how hot is the Earth's core compared to?
The Earth's core is compared to the surface of the sun.
How deep will the team of scientists drill into the floor of the Pacific Ocean?
The team of scientists will drill 6 kilometers or 3.7 miles deep into the floor of the Pacific Ocean.
What is the outer core layer composed of?
The outer core layer is composed of hot molten lava.
Scientists use direct observations to learn about the earth. What are three examples of direct observations?
Scientists use direct observations such as rocks, meteorites, and evidence from earthquakes.
Why do scientists measure the waves and their speed?
Scientists measure the waves and their speed to receive data about inner Earth's various layers.
How much will the operation cost?
The operation will cost one billion dollars or more.
What does the Earth's crust/surface include?
The Earth's crust includes landforms and bodies of water.
What indirect methods do scientists use to study the Earth?
Scientists use indirect methods such as studying seismic waves to study the Earth.
What did Dr. Inge Lehmann discover?
Dr. Inge Lehmann discovered the Earth's Inner Core.
What is the Earth's core temperature?
The Earth's core temperature is 6,000 Celsius, or 10,832 Fahrenheit.
If the operation is successful, what questions will we get answers to?
AIf the operation is successful, answers to questions about Earth's beginning and how Earth has changed will be answered.
What are the 5 layers of the Earth?
The five layers of the Earth are the Inner Core, Outer Core, Lower Mantle, Upper Mantle, Crust/Surface.
Why do scientists keep studying surface rocks today?
Scientists keep studying surface rocks to learn about the composition and density of the mantle.
What did Lehmann propose about the waves?
Dr. Lehmann proposed that the waves traveled into the core and then bounced off some kind of boundary.
What happens to the temperature the deeper you go into the Earth?
The temperature increases the deeper you go into the Earth.
Good scientists use the scientific method to try to find the answers to their questions.
Explain the scientific method.
The scientific method is when scientists pose hypotheses, conduct experiments, and then draw conclusions based on facts and the results of their experiments or analyses.