Earth Interior Structure
Earth Internal Heat
Radioactivity
Earth's Energy
Nuclear Energy/ Energy of Future
100
Heat in the Mantle is transferred via ____________
conVection
100
Where does Earth mostly get its energy from?
The SUN provides the most energy
100
Becquerel found out the __________ element glowed in the dark.
uranium
100
What is Geothermal energy?
Heat energy used from the Earth itself
100
What is the definition of Nuclear Fission?
The splitting of nuclei of atom using neutrons
200
What are the layers of the Earth?
Inner Core, Outer Core, Mantle (asthenosphere), Mantle (lithosphere), Crust
200
What are the other 2 forms Earth gets its energy?
The pressure of the rocks and radioactive elements
200
What were the 2 elements that Curie and Pierre used to experiment with radioactivity?
Polonium and Radium
200
What is the lithosphere like of the continents of the world? /
the Crust plates are broken up into pieces
200
What are the 2 structures in Nuclear Reactors?
core & control rods
300
How do we know the Hot interior of the Earth exists?
No one traveled there, but from Volcanoes and Earthquakes
300
What is a radioactive element?
made of atoms whose nuclei break down to form new atom nuclei
300
What is the definition of Radioactivity?
The release of energy in form of particles/rays due to nuclear decay
300
What is beneath the lithosphere of plates that separate the continents of the world?
The mantle that flows in between the plates (forms a volcano)
300
What are the 2 forms of hydrogen that combine in Nuclear Fusion?
Tritium and Deuterium
400
How many degrees is the core of the Earth?
9,000 Degrees Fahrenheit
400
How is heat transferred from the core to mantle? How is it transferred from mantle to the crust?
ConDuction and ConVection
400
The atomic # of an element is the same as what?
The number of protons it has
400
What is nuclear energy?
energy released from atom due to change in nucleus
400
What is the product of nuclear fusion and what form is it in? What does that mean?
Helium in the form of plasma, meaning it has + charged particles
500
What is the evidence that the core of the Earth is extremely hot?
Presence of Geysers and Hot Springs
500
How is energy emitted when nuclei of radioactive elements change to form new nuclei?
energy is emitted in the form of rays that create this energy, and heat.
500
When radioactivity (nuclei decay) occurs, what happens to the number of protons in an element?
it changes- either increases or decreases
500
Difference in definitions between radioactivity and nuclear energy?
radioactivity is energy emitted due to nuclei DECAY, but nuclear energy is released because CHANGE in nuclei
500
Because a problem with nuclear fusion reactors is withstanding heat, what is the type of structure called? What does it display?
Tokamak: doughnut shape, keep energy in (not lost)
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