Age of Earth and Rocks
What is the approximate age of the Earth? (must be with half a billion years)
4.5 Billion
What is the correct explanation for how the moon formed?
A mars-sized object collided with the young Earth, which ejected debris into space. This debris coalesced, which formed the moon.
Why does a cold fluid sink?
It is more dense than its surroundings.
When plates move toward each other it is called a _____ boundary
convergent
A GenZ slang term that means "secretly or chill."
lowkey
What is the name of the process used to find the exact age of rocks?
radiometric dating
What is the “capture theory” for how the moon formed?
The moon was captured by the Earth. It came from outside the solar system.
In what layer of the Earth do convection cells occur?
The mantle
With what plate boundaries does subduction occur?
convergent
Who is the narrator in Outer Banks?
John B.
What can be dated using C-14 dating?
Bones, Wood, organic material
Why does the moon have more visible craters than the Earth?
Erosion and plate tectonics. Over time, the Earth‘s crust has gotten recycled.
A cold fluid is stacked on top of a hot fluid. When the card is removed, what will happen?
The fluids will mix as the hot fluid will rise because it is less dense and the cold will sink because it is more dense.
What is a rift valley?
A depression on continental crust due to a divergent plate boundary.
Who is spongebob’s cousin?
Stanley S. Squarepants
A geologic event that can occur at any plate boundary
Earthquakes
Why is the Earth's core hotter than the moon's core?
Earth's core has radioactive decay. Moon's doesn't.
A hot fluid is stacked on top of a cold fluid. When the card is removed, what will happen?
Nothing! The hot fluid already has a lower density so it prefers to be on top.
What type of plate boundary is required to create seafloor spreading?
divergent
What is it called when host consumes a large quantity of food on social media?
Mukbang
Potassium 40 (K-40) has a half-life of 1.3 billion years. How many half-lives go by in 3.9 billion years?
3
What is Fission theory for formation of the moon?
The Earth was spinning so fast that a portion of the Earth broke off.
Explain temperature and density in a convection cell.
Magma warms, expands, and rises. Then magma cools, condenses, and falls.
Where are the rocks likely to be the youngest along the seafloor?
Rocks will be youngest closest to the ridge because that‘s where they formed.
Who is the most followed person on Instagram?
Cristiano Ronaldo