Natural Disasters


Posted by Mr Hoang | Posted in Earth Science | Posted on March 8, 2017

Our Wow activity for this term’s topic was an incursion with Lydia from Monash University. She taught us the difference between a hazard and a disaster. We also tried out some experiments. Here are some of our recounts:

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Today I learnt about volcanoes and earthquakes. I also learnt about plates and that the line between two plates is called a fault line. The mantle is like ooblek which is solid when you put pressure on it but when you don’t put pressure on the ooblek, it turns into liquid again. I also learnt that cold air goes down and hot air goes up. Its called convection. I enjoyed the activities we did and found everything very interesting. The thing that interested me most was that it was mainly earthquakes that cause tsunamis and that animals can sense when a tsunami is about to hit. Only countries on the fault line have earthquakes and volcanoes which is lucky for us in Australia because we are in the center of a plate.


At 2:30 pm we went down stairs into the learning neighbour-hood,it was all about natural disasters.We met Lydia in the room where some of the experiments were held at. The first activity was the milk experience, it had some food dye (red,blue,green and yellow and light green) and we were supposed to only do 2 drops per colour, Lydia also said not to move the table.Once we did that the colours spread out like a star, the purpose of that was to explain how the earth’s mantle moved about. The next activity was to find out how this flourish substance worked, Lydia said to rest your hand in the bowl and let your fingertips sink into the substance, it was like quicksand.After that i yanked the substance and it was pretty hard but i put my force into bringing it out.Then i had to squeeze the substance and release it,then i punched the dough 3 times before putting it back. The last activity was about volcanoes erupting, we used the basic requirements, vinegar, baking soda and a small container in a shape of a bottle, we were told to put two spoons of baking soda in some tissue and wrap it.Then put the vinegar into the bottle and when Lydia said to put it in, we instantly put the tissue with the baking soda in and then close the lid.We heard banging noises as they all popped up one by one,besides from our one.Lydia had to shake it so it could go bang!. We learnt about convection as it travels in the earth, only in particular convection cells, magma travels in the air and cools down and it repeats over and over again. I had really enjoyed the natural disasters lesson with Lydia, she explained the process of some of the natural disasters. And I also enjoyed the activities, my most favourite activity was the flour dough.


On Tuesday the 28th a person named Lydia came to our school from Monash University. She talked to us about natural disasters and how they occurred. Lydia’s favourite natural disasters were earthquakes and volcanoes. We mainly focused on earthquakes and volcanoes. We learnt that volcanoes are made from magma in the mantle which is further down from the crust. Our class split into five groups and five people were in each group and the people who were in my group were Mina,Bianca,Michelle, Angelina and me. We did an experiment that involved food colouring,detergent and milk which was supposed to make them separate or break apart like from an earthquake and that’s how scientists thought that country’s separated. After that Lydia told us about the plates on the crust and the fault plates and that country’s on the fault plates have a high risk of tsunami’s or earthquakes. We did another experiment and this one was about oobleck you were meant to hold it in your hand hard. It would resist and fight back and then stop and open your hand and it would be liquid and if you tried punching it,it would be solid. This is how scientist thought the mantle was like. It would be solid if something was on it and turn liquid if nothing was on it. Our last experiment was something related on volcanoes we did this with our group. We used baking soda,vinegar that looks like pink food colouring and a container. One person puts two teaspoons of baking soda on a piece of tissue paper another puts vinegar in the container then we have to call Lydia and wait for the others to finish. Once everyone is finished we wait until Lydia counts to three then we drop the tissue full of baking soda into the container and close the lid and step back and then we wait until it makes a bang and then the lid falls off and all of the stuff inside slowly bubbles up and falls into the bowl. Lydia grabs the container and then we all sit down on the floor and Lydia said if we enjoyed it and talked some more about other stuff then Andy gave Lydia a present and Lydia said thank you. We all left except for five people who were helping out Lydia. I enjoyed everything about this incursion because it was so interesting.


Today a woman named Lydia from Monash University came to our school, she told us about natural disasters and then we did three activities.The first one was with food dye and a plate with milk on it, we had to put two drops of every different colored food dye on the milk and then put two drops of detergent and the colors spread out into a star shape.The second activity was with oobleck, we had to rest our hand in it and when our hand has touched the bottom of the oobleck we had to pull our hand out but it was hard because when you put force on the oobleck it will go as hard as a rock, but if you rest your hand on it it will be like water.The second thing we did with the oobleck was we picked it up the and squeezed it to see how hard or firm it was. Then we let it go to see how moist it had become. The final thing we did with the oobleck was punch it to see if it would splash back like water which it didn’t. The last activity was when we put bicarb soda in a tissue and then folded the tissue into a bag and left the tissue with the bicarb in it on the table to use later on, then we got a cup of red vinegar and poured it into a container then when Lydia said so we put the bicarb soda in the vinegar, closed the lid and shook it and the lid popped off and my lid was the first lid to pop off.  
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