Rocks and Age
Earth is about 4 _________ years old
Billion
True/False: Sedimentary Rock Layers form vertically
False
When you compare one thing to another AND form a conclusion based on that information that is called
Correlation
An element is determined by the number of ________ inside an atom
Protons
Why are teddy bears never hungry?
They are always stuffed
What is the principle of Superposition?
Oldest rocks should be at the bottom
Layers of rock that are disrupted by fault movement and erosion are called
Unconformities
What do scientists observe to tell the absolute age of rocks?
Atoms
What is Half-Life?
The amount it takes for half of an element's isotope to decay
How do you fix a cracked pumpkin?
With a pumpkin patch
Which type of rocks are most directly observed and affected by superposition and relative aging?
Sedimentary Rocks
An unconformity where the rock layers are intact, but warped is called
Angular
What is the central region of an Atom called?
Nucleus
Carbon-14 is used to age rocks that up to how old?
75,000 years old
How do you catch a school of fish?
With a bookworm
What is Relative Aging?
An unconformity where the rock layers are warped and some are missing and new rock has replaced the missing rock is called
Disconformity
What are the charges of the 3 kinds of molecules inside a nucleus?
Protons (+)
Neutrons (none)
Electrons (-)
If an isotope loses protons and electrons it is __________ decay
Beta
Alpha
What type of dog is the most athletic?
Boxers
Which type of fossil is most useful in aiding with aging rocks?
Index Fossils
An unconformity where layers of rock are warped, missing and contain pieces of metamorphic and igneous rocks is called
Nonconformity
What are isotopes determined by?
Neutron amount
4 half-lives
What animal is best at landscaping?
Hedgehogs