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Showing posts with label science 2019. Show all posts
Showing posts with label science 2019. Show all posts

Monday, 21 October 2019

Dangerous Volcanic Eruptions

Mount Tambora Eruption of 1815

Mount Tambora: 1815 eruption                                                           Image result for mount tambora
The Mount Tambora Eruption of 1815 is the most dangerous eruption ever recorded in the world. The Volcano is located in Sumbawa Island, Indonesia. It exploded in April, 1815. The volcano remains as an active volcano, smaller explosions took place in 1880 and 1967, and seasmic activity increasing during the years of 2011, 2012, and 2013. The eruption began on the 5th of April, with small tremors and pyroclastic blasts. The deadly blast that shattered the mountain apart occured on the evening of the 10th of April. The blast, tsunamis, and pyroclastic flows that came after killed about 10,000 islanders, and destroyed roughly 35,000 homes. Before the eruption Tambora was about 4300 metres (14000 feet) high. After the deadly blast a large crater spanning 6 kilometres (3.7 miles) across remained. Tambora is a Stratovolcano. This means that they are usually dangerous volcanoes, they produce ash, and is composed of many layers of hardened lava, tephra, pumice and ash. The large eruption caused crop failure and chilling temperature drops for an entire year, causing 80,000 people to perish due to disease and famine.

Image result for mount tamboraImage result for mount tambora

Tuesday, 26 February 2019

anaerobic respiration

Aim: To demonstrate the effects of anaerobic respiration {muscle fatigue}

Hypothesis: I think that after a while, the muscles will begin to grow tired and sore.

Equipment: A spring-loaded clothes peg

Method:
1:hold the clothes peg between your thumb and forefinger

2:relax your fingers so that the peg closes all the way

3:squeeze your thumb and forefinger so the peg is fully open.

4: repeat steps 2 and 3 as fast as possible until you experience muscle fatigue.

results: I was able to keep going for 1 minute 17 seconds before my fingers began to experience fatigue.

conclusion: My hypothesis was right, after a while, my fingers did experience fatigue.

discussion: I do not think there is anything different i should have done, for i followed the instructions, and got the results that were relevant to the experiment.