Magnetic Plates

I think the earth core kind of turns which pulls some continents together and pulls them apart. So the seafloor follows the earth magnetic field.

Plate Boundary Exercise

Alex, September 15, 2015 Catalyst 10

Alex
September 15, 2015


1. Inner Core
2. Outer Core
3. Mesosphere
4. Asthenosphere
5. Lithosphere
6. Crust

1. Where are the oldest parts of the oceans?

I Think the oldest part of the ocean is the mid atlantic ridge because it has been there since the continents started spreading.

2. Do the Pacific, Atlantic, Indian, and Arctic ocean basins have the same age and patterns? No I don't think they are the same age because when the continents split water caved in therefore making it an ocean.

3. How does the age of the ocean floor compare with the age of rocks on the continents? The rocks on the continents are a lot older than the rocks on the seafloor because of the volcanic activity new rocks are forming all the time.

Mathematical Reflections on Polygons

1. This is a polygon 

1. The common properties of polygons are...

The common properties of polygons are they have to be closed, they can't intersect and they can't have any curves. Also 3D shaped can't be polygons because they have intersections.

2. The measure of degrees in an angle tells me that the angle is ...

The measure of angle tells me that it is either acute obtuse or right. Any angle that is less then 90˚ acute any angle that is more than 90˚ is obtuse and 90˚ is right

3. Some of the common angles are...

1. These are examples are shapes that can't be polygons

Some of the common angles are right angles (90˚) obtuse angles (>90˚) and acute angles (90˚>)


4. Some strategies to estimate angle measures are... Some strategies to estimate the angles are I think of a major angle close to it. Like the angle could be 85˚, but I would round it to 90˚. The main angles are 45˚ 90˚ 180˚ 360˚ etc.

5. To find accurate measurements with a protractor, I should…

To find accurate measurement with a protractor I should line up the the dot on the line and when I'm measuring I need to draw the line straight to make sure i get the correct measurement. When I am done measuring the angle I will need to double check to make sure everything was lined up correctly.

3. The one on the left is a right angle, the one in the middle is obtuse and the one on the right is an acute angle