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A planet orbiting a sun does so in an ellipse
What is Keplers 1st Law
Sun
The universe began about ___ billion years ago
13.7
The study of fossils
What is Paleontology
Oldest known rocks found on earth
What is Northwestern Canada
These huge celestial bodies produce light and heat
What are Stars?
The number of waves that pass a fixed point in a given amount of time
What is Wave Frequency?
These elements were formed during the big bang
Helium and Hydrogen
Fossils that occur only in rock layers of a particular geologic age
What is Index Fossils
The approximate age of the earth
4.0 billion years
An era where dinosaurs lived?
What is Mesozoic Era
waves with shorter wavelengths have ____ frequencies and ____ energy.
higher and more
A shape in which scientist believe the universe is
What is a Sphere
Mummification, Amber, Tar Seeps, Freezing, Petrification
What method is used to age a rock
Radiometric Dating
These types of rock are formed at or near Earth's surface
What are Sedimentary Rocks?
This determines about a star using the electromagnetic spectrum
What is Temperature
The ratio of Hydrogen and Helium evidence of the Big Bang
3/4 to 1/4
This type of fossil is recognized by their smooth, polished surfaces
Gastroliths
A way to date Age the Earth: Plate _____
Tectonics
A theory explaining that continents shift position on Earth's surface.
What are Continental Drift
Microwave, Visible Light, Gamma-rays
This order is in what?
At what temperature, following the Big Bang, was it cool enough for atoms to form
3000 K (kelvin)
Geologists also use index fossils to help locate layers that contain ___and natural gas deposits
oil
Meteorites s are used to help age the earth because it represent ?
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