Science 10

Volcanoes Blog Post

keishan2015

JIJI. Digital image. The Japan Times. N.p., n.d. Web. 24 May 2017.

This is a photo of Mount Fuiji, an active volcano in Japan. This image relates to the PowerPoint that we looked at in class since it talked about earthquakes and the different types of volcanoes: composite volcanoes, shield volcanoes, and rift eruptions.

We also learned that the type of volcano that forms depends on type of tectonic plate boundaries involved. Mount Fuji is an example of a composite volcano. Mount Fuji is a composite volcano due to the cone like shape it maintains. The cone like shape is caused by previous eruptions that had resulted in a buildup of ash and lava layers.

Eruptions from composite volcanoes occur when magma reaches the surface and gas gest trapped below, causing a buildup of pressure. Once the pressure is great enough the volcano will erupt. Mount Fuji hasn’t erupted since 1707; after part of Japan had been struck by an 8.6 magnitude earthquake it had caused Mount Fuji to erupt 2 moths later in December, its ash had reached as far as Tokyo. Mount Fuji hadn’t stopped erupting until the start of 1708. People fear that if another large earthquake occurs that it will cause Mount Fuji to erupt and cause a big catastrophe like it had in 1707.

Works cited:

Klemetti, Erik. “Mt. Fuji: Japan’s Sacred Volcano.” Big Think. N.p., 17 Mar. 2011. Web. 24 May 2017.

Float Your Boat

keishan2015

1.Problem

We had a lack of knowledge, time, and materials when creating our boat. If we had known more about the structure and how the weight of the pennies would effect the boat then our result would have been different.

2. Hypothesis

If we place the straws on the bottom of the boat then it will help support the weight of the pennies because due to the structure of the straw it will help act as a floating device.

3. How Many Pennies?

Our boat was only able to hold 20 pennies before it sunk.

4. What Was Your Thinking/Reasoning Behind the Design of Your Boat?

When we were creating the boat what we had thought initially was that the sticks would help support the weight of the pennies, the straws would be used as a floating device, and the tin foil would help protect the straws/sticks.

5. What Would You Change or Keep About Your Design?

If I were to make the boat again I would have still kept the tinfoil folded over to protect the sticks but I would have placed the straws on the outside of the foil still using it as a floating device. I also wouldn’t fold the foil in half because that is how the water had gotten into our boat, helping it sink.