Nuclear Fusion
Where does fusion occur naturally?
On the sun
What is observation?
A statement using your five senses.
What is the Principle of Superposition?
The rocks in a succession of undeformed sedimentary rock layers age from top to bottom.
What era did the formation of the Earth occur?
Precambrian
The H-R diagram classifies stars based on what factors?
Temperature and luminosity
Which atoms mix during the sun's fusion reaction?
Hydrogen Atoms
What is an inference?
A statement based on your views and prior experience.
What are Igneous Rocks?
formed from cooled and hardened magma
What type of event marks the end of an era.
A mass extinction
Our sun is what kind of star?
Main sequence
Nuclear fusion releases energy when?
Very light nuclei combine to form a single nucleus.
What are the two types of observations?
Quantitative and Qualitative
What is Sedimentary Rock?
Layers of sediment were formed by years of heat and pressure, resulting in the formation of rock.
What era did trilobites, fishes, and other marine organisms dominate?
Paleozoic
a red giant is much colder and very bright
Where does the energy that we obtain from nuclear reactions come from?
The mass of the fuel
Everyone in this class has a pencil. Inference or observation
Inference
What is the Principle of faunal succession?
Plant and animal fossil assemblages exist in a definite order in the geologic record.
Name the four eras
Precambrian, Paleozoic, Mesozoic, Cenozoic
What does the HR Diagram Show?
The temperature and Brightness of stars.
When a neutron leaves a nucleus what happens to its mass?
The teacher is holding a mug. Inference or observation?
Observation
What is the Principle of crosscutting relations?
A fault or igneous rock unit that cuts across another rock must be younger than the unit it cuts over.
How old is Earth, according to the geologic time scale?
Approximately 4.5 billion years old
Why are white dwarfs bright
Because they are so extremely hot