Scientific Investigations
What is the variable that the Scientists changes on purpose?
What was the name of the ancient supercontinent or continental drift theory?
Pangea
What boundary occurs when two tectonic plates move away from each other?
Divergent Boundary
What is an area of land where water drains into the same source called?
Watershed
What does overfishing mean?
Catching fishes faster than populations can recover.
What is the variable that a scientist measures during an experiment?
Dependent Variable
Who proposed the theory of continental drift?
Alfred Wegener
What boundary occurs when two tectonic plates slide past each other?
Transform Boundary
What is water flowing over land called?
Runoff
What is one way to help endangered Pacific bluefin tuna populations recover?
Limit the number of tuna that can be caught.
What is a testable prediction called?
Hypothesis
What type of evidence can fossils provide about Earth's past?
Evidence that Earth and living things have changed over time.
What natural disaster commonly occurs along transform boundaries?
Earthquakes
Why can paved parking lots increase runoff?
Water cannot easily soak into the ground.
What can happen when excess fertilizer enters a pond?
An Algae can occur.
avier tests different brands of detergent and measures how much coffee stain is removed. What is his dependent variable?
The amount of coffee stain removed.
According to the law of superposition, where are the oldest undisturbed rock layers found?
At the bottom.
What type of boundary occurs when two tectonic plates collide?
Convergent Collision Boundary
How can fertilizer runoff harm rivers and groundwater?
It adds excess nutrients and pollutants to water.
Why can fish die after an algae bloom?
Bacteria use dissolved oxygen when breaking down dead algae, leaving less oxygen for fish.
Complete this hypothesis: If different detergents are tested, then ______ will remove the most coffee stain.
A prediction naming which detergent will work best.
A dark rock intrusion cuts through three existing rock layers. Is the intrusion older or younger?
Younger.
What can form when continental crust splits apart and magma creates new crust?
A new ocean basin
Name one beneficial human activity that protects a watershed.
Planting native vegetation or installing water treatment plants.
Sea level increases from 10 mm to 85 mm over 25 years. What is the average rate of change?
3 mm per year.