in this video, it shows a guy falling down the stairs. this is the concept of gravity. Gravity is an invisible force holing us to the ground. then he missed a step, gravity pulled him down causing him to fall. he is being pulled down at a speed of 9.8m/s because that is the speed of what all things fall at.
this video demonstrates the concept of uniform motion. where things move at the same speed, and never speed up or slow down. they just keep going like this forever. a place that has things moving at uniform motion is in space.
above is a picture of Mount Vesuvius. the photo was taken by Melvin .C Shaffer in 1944 ( Shaffer, Melvin C. Digital image. N.p., n.d. Web. )
Mount Vesuvius is a composite volcano which is active in Italy. Mount Vesuvius is part of the Campanile volcanic arc which sits on the tectonic plate where the African plate is subducted under the European plate. in the power point we watched in class today, it was all about earthquakes and volcanoes, this one being with an extremely devastating past. subduction is when one plate over laps the other. composite volcanoes are typically found near subduction zones, just like Mount Vesuvius. what happens is that when the magma reaches the surface, gas builds up until there is too much. that is what causes an eruption! the photo is an eruption in 1944. Mount Vesuvius is best known for is destruction of the city of Pompeii. Mount Vesuvius has experienced eight major eruptions in the last 17,000 years.
Today in science 10 we tested how many pennies can we add to the boats before they sink?
our boat held 93
hypothisis: by tapping our straws, it will help hold the air above the water instead of water getting into the straws and weighing it down.
In my group, our boat managed to hold up 93 pennies which was the most in the class
reason why: it was because of the way we tapped our straws on the side, and because of the way we balances our pennies with in the boat. By doing so, nothing made it tip over. The only thing it could do was sink.
Next time if we were given the same matierials, I would try to shape the boat better so we didn’t have to work so hard to balance our pennies.
In the end, my hypothesis was correct. The way we tapped the straws did help our boat stay a float.