How does Earth change?
Process of wind carrying bits of sediment across the land.
What is deposition
Radiometric dating uses atoms of the same element that have different numbers of neurons.
What is isotopes.
What is statis?
No change for a long period of time.
Sedimentary rocks where thin layers are recognizable.
What are laminations?
DAILY DOUBLE
Huge slabs of Earth's lithosphere that rest on top of the asthenosphere.
What are tectonic plates?
Radiometric Dating reveals this of a rock or fossil.
What is absolute age.
DAILY DOUBLE
The prediction that the fossil record should show organisms with new body plans appearing gradually in the fossil record.
What is phyletic gradualism?
Ape-like animals that walked on two legs.
What are hominids?
DAILY DOUBLE
Layering that doesn't blend in sedimentary layers.
What is bedding?
If the layers of rock are not disturbed by forces beneath Earth’s surface, the oldest layer will be on the bottom and the youngest layer will be on top.
How old is the Earth according to many scientists?
About 4.6 billion years old.
What is an index fossil?
A fossil of an organism that is found within a limited portion of the geologic column but is relatively widespread and abundant in that limited portion.
Structure and Shape of an animal?
Which of the following is an example of mechanical weathering?
abrasion, rusting, melting
What is abrasion?
What are the types of Boundaries?
What are transform, diverge and convergent boundaries.
DAILY DOUBLE
Give one piece of evidence from the eruption of Mount St. Helens that shows that geologic processes can occur rapidly.
Sample answer: The eruption made many layers of ash and sediment. Rock layers formed quickly after the eruption. The Mount St. Helens eruption is rapid
erosion.
What are at least 2 of the 4 assumptions that must be true for radiologic dating to be accurate?
1. The decay rate (half-life) has always been constant.
2. The rock has experienced no chemical exchange with the rocks around it.(Scientists describe this as a closed system.)
3. The initial concentration of daughter products at the time of formation of the rock can be determined.
4. The parent-to-daughter ratios were caused only by radioactive decay.
Sedimentary layers in contact with each other showing little or no evidence of erosion.
What are flat gaps?
Give three pieces of geological evidence that are inconsistent with the geologic time scale of millions of years.
Any three of the following are acceptable:
(1) Erosion and sedimentation in the ocean are inconsistent with the geologic time scale. (2) Bedding layers of sedimentary rock disagrees with the idea that layers formed slowly would show a more gradual shift and also could be disturbed by animals. (3) Flat gaps, where there are missing rock layers, are found above and below the absent layers. Flat gaps are in direct contact with other layers and do not show any erosion. (4) There are large individual rock layers across big areas. (5) There is evidence of rapid geologic processes, like building rock layers quickly or eroding canyons.
What are some evidences of the worldwide flood?
Any of the following are acceptable: (1) The existence of millions of fossils is evidence of a worldwide, destructive event. (2) There are many examples of widespread sedimentary deposits showing a very large geological event. (3) Marine fossils are found on the continents. (4) You can find sedimentary layers that were deposited by water all across the continent.
DAILY DOUBLE
Explain how the small number of morphological intermediates is inconsistent with macroevolution.
Sample answer: Morphological intermediates are organisms that share characteristics with different animal groups, such as the fact that mice and cats both have fur. In the theory of macroevolution, scientists would expect that there would be many remains of morphological intermediates. Actually, that is not true.
Explain how the evidence of the Cambrian Explosion is inconsistent with macroevolution.
Sample answer: One thing that supports the theory of macroevolution is that organisms with new body plans showed up gradually in the fossil record. In the Cambrian Explosion, many changes and new body plans appeared at the same time.