A fossil of a plant from the age of the dinosaurs is found on the eastern coast of Brazil. An identical fossil from the same time period is found in western Africa. What is most likely the explanation for this?
What is...The land areas from which each fossil came have moved apart over time?
100
Which of the following is the densest?
What is...a subducting plate?
100
Based on the Law of Superposition, what can be concluded about fossils?
What is...the oldest fossils are found in the lowest rock layers?
100
The data represented in a graph showing radioactive decay helps scientists to see the rate of decay and find the ________________ age of a rock or fossil.
What is...absolute age?
100
What is the underlying cause of all natural species extinctions?
What is...environmental change?
200
A scientist discovered that the age and kinds of rocks along the edge of North America match the rocks along the edge of Europe. Which of the following does this support?
What is...continental drift theory?
200
Which process could result in the formation of high mountains with sharp peaks?
What are...two continental plates colliding?
200
How does an unconformity change a scientist’s understanding of the history of Earth?
What is...increases that understanding because the changes in the positions of rock layers show how forces acted on Earth?
200
If a fossil was found that only contained ¼ of the parent element left, how many half-lives has the parent element gone through?
What is...2?
200
A favorable trait that helps species survive and is passed on to offspring is called:
What is...an adaptation?
300
The best evidence that two land areas were once connected is the discovery that both land masses:
What is...have similar types of rocks and fossils?
300
The lithosphere is made up of ________.
What is...the crust and the uppermost part of the mantle?
300
Scientists believe that a large asteroid struck Earth approximately 65 million years ago. It is often theorized that this event contributed to the _________.
What is...the extinction of the dinosaur?
300
How many half-lives would have passed if a scientist found 1/16 of the parent element remaining in a sample fossil?
What is...4?
300
Throughout Earth's history, most species that have lived are now extinct. Which was the basic cause of extinction for most of these species?
What is...the inability to adapt to environmental changes?
400
Compared to Earth’s crust, Earth’s core is believed to be …..
What is...more dense, hotter, and composed of more iron?
400
Tectonic plates are destroyed at which kind of plate boundary?
What is...convergent plate boundary?
400
Fossils that are preserved with little to no decay (hair, soft tissue, etc. is still visible) are called_____.
What are...cast & mold fossils.
400
What is the difference between relative dating and absolute dating?
What is...relative dating can estimate a rock’s age only in relation to other objects or events, while absolute dating can provide an actual age?
400
The main idea of evolution states that ________.
What are...the characteristics of organisms within a population change over time?
500
The Earth is arranged in layers based on the layers different ________________.
What is...chemical composition?
500
Earthquakes are most likely to occur at which boundary?
What is...where two plates are scraping past each other (transform boundary).
500
How are ice cores useful for analyzing changes in Earth’s atmosphere over time?
What is...they contain air from different periods in Earth’s history?
500
As the parent element decreases, the daughter element increases at ______.
What is...the same rate?
500
A population of lizards lives in a small area. In a short time, their habitat becomes much hotter and drier. How may the lizard population continue to survive in this area?
What is...the lizards that can live on the least water will survive and pass that trait to their offspring?