Solar water heaters use _____________ to heat water.
What is solar energy?
100
The remains of organisms that are preserved
What is a fossil?
100
The largest division of time....
What is eon?
100
This is a break in the Earth's crust.
What is a fault?
100
When a parent isotope breaks down into a more stable isotope or _______________ isotope.
What is daughter?
200
This is used to convert water (hydrogen and oxygen) into energy...
What is a fuel cell?
200
This is harden tree sap.
What is amber?
200
We are currently living in this era.
What is Cenozoic?
200
Molten rock that squeezes into existing rock and cools is called what.
What is an intrusion?
200
The amount of time it takes for half of a radioactive substance to break down into a more stable isotope.
What is a half-life?
300
A resource that can be replaced at the same rate it is used is called...
What is a renewable resource?
300
A fossil that is used to date surrounding rock layers.
What is an index fossil?
300
This era is the "Age of Old Life"
What is Paleozoic?
300
Slanting of rock layers.
What is tilting?
300
The process that involves the comparison of rock layers with others in a sequence to determine its age.
What is relative dating?
400
Energy contained in fossil fuels originally came from...
What is the sun?
400
If you found this type of fossil on a mountaintop, it would show that the mountain had been under an ocean in ancient times.
What is a marine fossil?
400
Scientists think this may have caused the extinction of dinosaurs...
What is climate change?
(Possibly due to the meteor)
400
Erosion is one of the major causes of the missing rock layers, know as this.
What is an unconformity
400
Rubidium-89 has a half life of 22 days. The starting amount of rubidium was 64 grams. What is the amount of Rubidium-89 after 66 days?
What is 8 grams?
500
The fossil fuel that is formed underground from decomposed plants is...
What is coal?
500
This type of fossil is used to figure out what an animal ate
What is a coprolite?
500
Paleontologists study this time period of history...
(Dates must be given to answer the question correctly.)
What is 3.5 billion years ago - present?
*Single celled organisms began at this time.
500
The age of an intrusion is _______________ than the layers it cuts through.
What is younger?
500
Young-54 decays into Crocket-52. It has a half life of 84 years. If you begin with a sample of 20 grams of Young-54, how many grams of Crocket-52 will you have after 126 years?