Carolina Tides

This photo was taken on the inner-coastal waterway in Awendaw, South Carolina. In the picture it is high tide so the earth must be aligned with the sun while the moon is perpendicular to the earth, this is called a spring tide. If there were a low tide then it would be at a neap tide. High to low tides occur around every 6 hours and a high to high or a low to low tide would occur around every 12 hours. This means that there are 4 tides a day.

Momentum and Impulse

This resource gave me a good overview of what impulse and momentum are as well as how to use the equations associated with them. Momentum is represented by p and is equal to the mass times the change in velocity, so p=mv. Impulse is represented by J and is equal to the change in momentum and the force times the change in time so Δp=J and J=fΔt. The change in momentum is the final momentum minus the initial momentum or Δp=pfinal-pinitial. Since the video was done by a teacher, it is much easier to understand and is more like a mini lesson than just a video.

Changing Tides

How Tides Work!

Living on and island, I am constantly at the beach and in the ocean. After a long afternoon at the beach I notice how the ocean may have started at one point on the beach and then completely change after a few hours. In this resource, the nature of the tides and how the position of the moon and sun effect the tides are easily explained. There are two types of tides, Spring Tides and Neap Tides. Spring tides are when the tides are at their highest and lowest and there is either a full moon or a new moon and the sun is directly in front of the moon or the moon is directly behind the earth and the sun. Neap Tides are when there are half moons and the moon is on either side of the earth when the sun is not directly in front of it. These tides are due to the differences in forces on each side of the earth when is it revolving throughout the day. This is a great source that made it much easier for me to understand tides and the universal gravitational force.