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Volcanic Eruption (Grade09-Dalton)
The document provides information about volcanoes, including what they are, how eruptions occur, safety precautions before, during, and after an eruption, health hazards from volcanic ash, trivia about volcanoes, and emergency contact numbers. Volcanic ash is dangerous if inhaled as it contains particles and gases that can cause respiratory, eye, and skin issues. The presentation aims to increase awareness of volcanic hazards and their health impacts.
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Volcanic Eruption (Grade09-Dalton)
- 1. IMPOSTORS AMONG CREWMATES There is1 Impostor among us
- 2. Contents of thisPRESENTATION Here’s what you’ll find in this POWERPOINT presentation: o This presentation focuses mainly on volcanoes. o Facts and trivias about volcanoes. o What to do: ● Before ● During ● After o To create awareness about: ● Volcanic Hazards ● How it affects your health.
- 3. Whoa! You’re about tofind out many incredible things about volcanoes!
- 4. What is avolcano? ● A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. ● On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most found underwater. ● Volcano refer to the eruption of hot molten lava from below the surface of Earth.
- 5. What is avolcanic eruption? ● A volcanic eruption occurs when hot materials from the Earth's interior are thrown out of a volcano. ● Volcanic eruptions happen when lava and gas are discharged from a volcanic vent. ● Volcanic eruptions often cause temporary food shortages and volcanic ash landslides called Lahar.
- 6. What to dobefore volcanic Step 3 Evacuate as soon as possible. Step 1 Listen for emergency information alerts. Step 4 Do not be a hard headed. Step 2 Avoid areas downstream of the eruption. Step 5 Don’t forget to include important things such as food, radio and battery. eruption
- 7. What to doduring volcanic Step 3 Avoid low lying areas. Step 1 If indoor, close all windows and doors. Step 4 If outdoor, seek shelter. Step 2 Avoid areas downstream of the eruption. Step 5 Stay out of Volcanic areas. eruption
- 8. What to doafter volcanic Step 3 Be alert on what other disasters a volcanic eruption can trigger. Step 1 Listen to your local radio stations for civil defence advice and follow instructions. Step 4 Assess the damage done to your home (should be safe). Step 2 Stay indoors and away from volcanic ash fall areas. Step 5 Stay out of Volcanic areas. eruption
- 9. VOLCANIC HAZARDS ANDTHEIR EFFECT TO HUMAN HEALTH 1. A multitude of dangerous particles and gases, such as aerosols, are carried in volcanic ash. Some of these include; Carbon dioxide - Sulfates (sulfur dioxide) - Hydrochloric acid - Hydroflouric acid 2. Inhalation of volcanic ash can be very detrimental to human health, due to the harmful aerosols and poisonous gases the ash is made up of. Health effects include respiratory problems, eye problems, and skin irritation.
- 10. VOLCANIC HAZARDS ANDTHEIR EFFECT TO HUMAN HEALTH 3. Volcanic ash contaminates the biosphere through inhalation by humans and animals, and can also effect crops growing in an area with large amounts of ash. When inhaled, the fibers are deposited in air passages and on lung cells. 4. One long-term effect of volcanic ash is silicosis. Silicosis is a disease resulting in lung impairment and scarring, from exposure to particles of free crystalline silica. Minerals that are associated with silicosis include quartz, cristobalite, and tridymite, all potentially present in volcanic ash. 5. Volcanic ash can also contaminate the water supply.
- 11. Trivia and facts The Skeld MiraHQ An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows and rock falls.. In an eruption, gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Eruptions can cause lava flows, hot ash flows, mudslides, avalanches, falling ash and floods. Polus Volcanic lightning occurs mostly within the cloud of ash during an eruption, and is created by the friction of the ash rushing to the surface. 01 02 03 Mira HQ The most deadly eruptions have occurred in Indonesia, with tens of thousands of lives lost to starvation, tsunami (as a result of the eruption), ash flows, and mudflows. 04
- 12. EMERGENCY HOTLINES NATIONAL EMERGENCY HOTLINE 911 National Police Hotline 117 (02)8722-0650 Red Cross 143 (02) 8527-8385 to 95 Bureau of Fire Protection (02) 8426-0219 (02) 8426-3812 CALL CALL CALL CALL CALL CALL CALL CALL
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