Independent and Dependent
You model the universe using a balloon and measure the distance between each galaxy and your home galaxy as the balloon is inflated. What are your dependent and independent variables?
Dependent: Distance between galaxies
Independent: Size (circumference) of the balloon
What is the theory of continental drift?
That the continents drift or move around over time
Geological feature where new seafloor is created due to the upwelling of magma
Mid-Ocean/Atlantic Ridge
Type of boundary were mountains are created
Convergent
You do an experiment to see how sleep affect student test scores
Dependent: Test Score
Independent: Student Sleep Time
What does Pangea mean?
Pan: All
Gaia: Earth
According to seafloor spreading older seafloor would be found...
Farther from the mid-ocean ridge
Type of boundary where new seafloor is made
Divergent
You do an experiment to see how the amount of sunlight a plant receives affects its growth rate.
Dependent: Plant growth
Independent: Amount of sunlight
Who came up with the theory of continental drift?
Alfred Wegener
Scientists predicted that more sediment would be found where on the sea floor?
Farther away from the mid-ocean ridge
Type of boundary where to plates move against each other in opposite directions
Transform
You do an experiment to see long it takes for a dog to find a toy of different colors.
Dependent: Time to find toy
Independent: Color of toy
Who discovered the Mid-Atlantic Ridge?
Marie Tharp
Scientist who proved seafloor spreading
Harry Hess
What type of boundary can create a trench?
Convergent
You do an experiment where you see how different foods affect the yolk color of chicken eggs
Dependent: Yolk color
Independent: Food type
What are three pieces of evidence used to support contiental drift?
Fossils, Puzzle Piece Continents, Glacier Markings, Mountain Ranges
What Natural Phenomena created the pattern of magnetism used to prove seafloor spreading?
Magnetic Reversal
What causes the tectonic plates to move?
Convection Currents