Composition of Earth
all of the living and non-living things in an area
What is an ecosystem?
a fossil formed in sedimentary rock that shows movement of an animal, like a footprint
What is a trace fossil?
Two plates move away from each other at...
What is a divergent boundary?
liquid rock that has reached Earth’s surface
What is lava?
parts of Earth’s surface are loosened or worn away and are then moved to a different location
What is erosion?
rock is more likely to melt if the temperature...
What is increases?
The process of preserving remains by drying them is called...
What is mummification?
Convergent boundaries are usually sites of _____ stress.
What is compression?
Most injuries during earthquakes are caused by...
What is the collapse of buildings?
weathering that causes red-colored rocks and soil
What is oxidation?
The splitting of slate into layers shows its...
What is foliation?
mass extinctions happened; end of the dinosaurs
What is the Cretaceous period?
New ocean floor is constantly being produced through the process known as...
What is seafloor spreading?
A volcanically active area of Earth’s surface, far from a plate boundary is a...
What is a hot spot?
Pollution mixing with water vapor causes...
What is acid rain?
a jar with its lid closed tight is an example of this system
What is a closed system?
banded layers of sand and silt that are deposited annually in a lake
What is a varve?
The region along tectonic plate boundaries where one plate moves beneath another is called a...
What is a subduction zone?
tool used to record vibrations in the ground
The composition of soil depends to a large extent on...
What is the parent material?
phosphorus cycles through all spheres except...
What is the atmosphere?
Precambrian time ended about... (answer is in millions of years)
What is 542 million years ago?
theory that explains how large pieces of the lithosphere move and change shape
What is continental drift?
A characteristic of lava that determines the force of a volcanic eruption is its thickness or...
What is viscosity?
In a water budget, the income is precipitation and the expenses are...
What are runoff and evapotranspiration?