why do volcanoes erupt science fair project
Can a volcano be my science fair topic? Yes,
volcanoes can be the topic of your project your project is an experiment with measurable results. This means that making a model of a volcano is generally not enough. Yes, it could be part of your project, but most project are expected to have and experiment with measurable results. How to Get Started Before starting a science project, first find out what is expected. This video by will give you clues. Now its time to start your, which involves finding out about volcanoes. The types of volcanoes can be found here. Research: Why do volcanoes erupt? 1. Volcanoes erupt in different ways, some explode violently, some are less violent. 2. Volcanoes explode because of a build up of pressure under the Earth s surface. Explosions can be caused when gas inside a closed container gets hot and starts moving faster. Explosions can be caused when more gas is produced inside a closed container. Did You Know! Firecrackers are an example of an explosion resulting from a gas being produced in a closed container. When the chemicals inside the firecracker are headed gas is formed. As more and more gas is produced the pressure becomes so great that it breaks its container. This happens so quickly that a loud is heard. Like a firecracker, gases build up inside a volcano until finally it explodes breaks open the Earth s surface so that gases escape.
The escaping gas pushes solid and liquid rock up and out of the Earth. Adding Mentos Candy to a bottle of soda causes gas dissolved in the soda to quickly come to the surface of the liquid, thus building up pressure inside the bottle. The gas pressure it way out the opening bringing with it part of the soda. Different than a volcano, but similar in that both eruptions are caused by excess gas pressure in a container. How can you cause safe explosions? 1. When a sealed potato chip bags get hot it expands and sometimes the bag opens on its own with a bang! Why? Because when a gas is heated, its molecules move faster. The hotter the gas the faster they move and the harder and more often they hit against the sides of their container. Discover for Yourself Air inside a zip-lock bag does the same thing. Place a sealed zip-lock bag in areas with a different air temperature inside a freezer outdoors in direct sunlight on a hot day. 2. Shake a sealed can of soda. The video gives you information about the production of gas when you shake a soda. P How can you safely produce a gas? Alkaseltzer produces a gas when dropped in water. Baking powder and water also produce a gas.
I wonder What would happen if I used different amounts of alkaseltzer (or baking soda)? How can you change the temperature of the gas in a closed container? Place the container in different areas. The temperature inside and outside a house is often different. Inside a room, the temperature is often hotter at the ceiling than near the floor. Heat the container by placing it in a bowl of warm water. Cool the container by placing it in a bowl of icy water. 2. How can you produce more gas in a closed container? Place a small amount of water inside a resealable plastic bag. Add a small piece of alkaseltzer and immediately seal the bag. It works best if you can keep the water and alkaseltzer seperated until the bag is closed. Think! A dormant volcano is like a closed container. When gas pressure builds up within this closed container, it erupts when the pressure is enough to break through the Earth s surface. I wonder How can I experiment to determine how heat affects gas pressure in a closed container? I wonder How can I experiment to determine how gas production affects the gas pressure in a closed container? The baking soda and vinegar volcano is the kitchen equivalent of a volcano. Obviously, it s notб the real б thing, but it s cool all the same!
The volcano is also non-toxic, which adds to its appeal. It is a classic science project which can help kids learn about chemical reactions and. This takes about 30 minutes to complete. First, make the cone of the. Mix 6 cups flour, 2 cups salt, 4 tablespoons cooking oil, and 2 cups of water. The should be smooth and firm (more water may be added if needed). Stand the soda bottle in the baking pan and mold the dough around it into a volcano shape. Don t cover the hole or drop dough into it. Fill the bottle most of the way full with warm water and a bit of red food color (can be done before sculpting if you don t take so long that the water gets cold). Add 6 drops of detergent to the bottle contents. The detergent helps trap the bubbles produced by the reaction so you get better lava. Add 2 tablespoons baking soda to the liquid. Slowly pour vinegar into the bottle. Watch out - eruption time! While it s fine for a young investigator to explore a simple model volcano, you ll want to add if you want to make the volcano a better science project. Here are ideas for ways to experiment with a baking soda volcano: Make a prediction about what happens if you change the amount of baking soda or vinegar. Record and analyze the effect, if any. Can you think of ways to change the volcano to make the eruption go higher or last longer?
This might involve changing the chemicals or the shape of the volcano. It helps to record numerical data, such as the volume of liquid, the height of the lava, or duration of the eruption. Does it affect your volcano if you use a different kind of chemical to color the volcano? You could use tempera paint powder. Try using tonic water instead of regular water to get a volcano that glows under black light. What happens if you substitute other acids instead of vinegar or other bases instead of baking soda? Examples of acids include lemon juice or ketchup. Examples of bases include laundry detergent and household ammonia. Use caution if you substitute chemicals because can produce hazardous gasses. Don t experiment with bleach or bathroom cleaners. The cool red lava is the between the baking soda and vinegar. In this reaction, is produced, which is also present in real volcanoes. As the carbon dioxide gas is produced, pressure builds up inside the plastic bottle, until the gas bubbles (thanks to the detergent) out of the volcano. Adding a bit of food coloring will result in red-orange lava! Orange seems to work the best. Add some red, yellow, and even purple, for a bright display.
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