Part IV Flashcards
What type of fossil is a hollow area in sediment in the shape of all or part of an organism?
Mold
A leaf falls into a shallow lake and is rapidly buried in the sediment. The sediment changes to rock over millions of years. Which type of fossil would most likely be formed?
Carbon Film
How do scientists determine the absolute age of rocks?
Radiometric Dating
How can fossils be dated?
Comparing Positions.
Measuring Radioactive Elements
Knowing the age of the rock layer they’re in.
What is a trace fossil?
When print buried by sediment becomes solid
What is the approximate age of the Earth
5 Billion Years
_______ ________ help scientists match rock layers and are used to tell the relative ages of the rock layers in which they occur.
Index Fossils
What is the difference between the absolute and the relative age of the rocks?
absolute - for sure
relative - estimate (layer)
SI Units of Measure
Define / SI Unit used
Mass- Kilogram- Amount of matter an object is made of
Volume- Cubic Meter- Amount of space an object takes up.
Length- Meter- Distance between two points
Density- Kg/M Cubed - Mass per unit of volume
Temperature - Kelvin - How hot or cold something is