Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Disadvantages and advantages of evaporation
Acid rain in our world
Acid rain in our world
Don’t take our word for it - see why 10 million students trust us with their essay needs.
The question I would like to answer for my science project is what liquids evaporate the fastest. This topic gets my attention because I would like to see how fast liquids evaporate in comparison to other liquids. Another reason this topic sparks my attention is because I like how the water cycle works in many different ways; for example, one minute we have water being evaporated into the atmosphere and being changed into a gas and the next minute it comes back down in the form of rain. For my experiment, I will be taking four liquids and putting half a cup of each liquid into separate cups; then I will put them all in the same place so that they all will evaporate in the same conditions. I will then monitor and take notes everyday to see …show more content…
Evaporation goes through a physical change because the liquid(s) get evaporated into the atmosphere and turn into a gas called water vapor. Next, it gets turned back into a liquid and comes back down to the ground as rain. This process is called the water cycle and it's a physical change because it can be changed into a new substance but can be changed back to its original substance. This information came from what I already knew from previous science classes. How do liquids evaporate in different conditions? Well, water can evaporate in any conditions, but evaporation works best in warm conditions. I got this information from: www.chem4kids.com/files/matter_evap.html . How does the world use evaporation? The world uses evaporation for the water cycle. The water cycle helps us in many ways. It helps filter our water, but if the atmosphere is very polluted you could get something called acid rain, and acid rain isn’t a good thing for anything to digest or even touch. Who discovered evaporation? It is unknown who actually discovered evaporation. You could track evaporation back to ancient times because they used it for salt in the ocean. Who needs evaporation? Everyone to live because if evaporation didn’t exist, neither would the water cycle and we would run out of water and people need water to live a stay
Hypothesis: The Alka Seltzer will dissolve fastest in hot water and slowest in cold water.
Hypothesis- Water will evaporate the quickest because there isn't heavy sugars in the drinks slowingdown the evaporation process.
Alka Seltzer Dissolving at Different Temperatures. The variable that I will change will be the temperature of the water. that the Alka Seltzer is put in. For my results I will measure the time taken for the Alka seltzer.
This experiment will show how the temperature of water will affect how quickly a Alka-Seltzer tablet will dissolve. (Rowland) This experiment seemed appealing to me because it sounded interesting to experiment with chemical reactions. “How does the temperature of water affect how quickly an Alka-Seltzer tablet will dissolve?”
Matter exists in three basic states: solid, liquid, or gas. A substance experiences a phase change when the physical characteristics of that substance change from one state to another state. Perhaps the most recognizable examples of phase changes are those changes from a solid to a liquid or a liquid to a gas. When a substance goes through a phase change, there is a change in the internal energy of the substance but not the temperature of the substance (Serway, et al. 611).
There are numerous stages that take place simultaneously in the hydrologic cycle and this includes evaporation. This is when the water alters from a liquid state into a gas. The damp air from the water rises into the atmosphere and when it cools, the vapor condenses and shapes into clouds. But those billows are not the only form the vapors make; it can also materialize as dew, fog and mist, which blanket the Earth, characteristically on a rainy or humid day. Evaporation takes place when water changes from a liquid state into a gaseous state, and ascents out of the pores of the earth and into the atmosphere as a vapor (“How”). While evaporation is taking place, condensation is also occurring. When the temperature in the air plunges, the clouds become heavy and as a result they relieve themselves of the extra weight, which is called precipitation. This produces rain, hail, snow and sleet, conditioned upon the temperate. As the precipitation falls, it enters the surface of the ground and percolates into the soil, which is called infiltration. The more porous the land is, the more the infiltration can take place. However, the ground cannot hold all of that water and floods. The excess rainfall, which is also called runoff that has not been absorbed makes its way into bodies of water, such as small ponds, rivers, lakes and parts of the ocean (“Summary”).
Variables --------- During the experiments, the water will be heated using different spirit burners containing different alcohols. I will be able to change different parts of the experiment. These are the. Volume of water heated:
Sweating and Heat Loss Investigation Aim To find out whether heat is lost faster over a sweaty body compared to a dry body. Apparatus 2 Boiling tubes 47ml max 2 Measuring jug 50ml max A Beaker 250ml max 2 thermometers Paper towels A kettle to boil water A stopwatch 2 magnifying glasses (8x) 2 corks with a small hole through the centre A test tube rack Preliminary work In my preliminary work, I need to find out how much water to use, whether the tissue should be wet with hot/cold water, how often the readings should be taken, how accurate should the readings be, how many readings should be taken and what my starting temperature should be. My results are as follows. Starting temperature of 40°c Time (secs) Wet towel (°c) Dry towel (°c) 30 36 38.9 60 35 38.5 90 34 37.9 120 33.9 37.5 150 33 37 180 32.6 36.9 210 32.3 36.8 240 31 36.5 270 30.4 36 300 30.3 35.9 Starting temperature of 65°c Time (secs) Wet towel (°c) Dry towel (°c) 30 51.1 53 60 48.2 51.9 90 46.4 51 120 46 50 150 44.3 49 180 42.9 48.4 210 42.6 46.9 240 41.7 48 270 40.2 47.5 300 39.3 47 Starting temperature of 60°c Time (secs) Wet towel (°c) Dry towel (°c)
It is based on physics, and the 2nd law of thermodynamics. A liquid is vaporized through compression, which requires kinetic energy. This draws the energy needed from the direct area; causing a loss in energy and then it
In a similar transpiration lab, performed by an AP student, the results showed that controlled was the fastest, wind the second, light and heat the third, and humidity the slowest. These results occurred because all four environments played a role in increasing evaporation which therefore increased the rate of evaporation. In the controlled environment, the room temperature helped increase the rate of evaporation (1.67mL/m²). In the wind environment, the blowing of air on the leaves increased the rate of evaporation (0.76 mL/m²). In the light and heat environment, the heat hitting the plant increased the rate of evaporation therefore increasing amount of water being transpired (0.93 mL/m²). In the humidity environment, the moist ...
Water is the most important substance in our evolution and our daily lives. Without water,
Air is composed of molecules. Air is matter. It has mass and takes up space. Air is composed of different gases such as nitrogen, oxygen, carbon dioxide, water vapor, and other gases. Air molecules are in constant motion. As they move, they come in contact with surfaces. Air molecules push and press on the surfaces they contact. The amount of force per unit area that air molecules exert on a surface is called air pressure. (What is Air Pressure 6) Air pressure is caused by all of the air molecules in the Earth's atmosphere pressing down on the Earth's surfaces. We can measure air pressure to help us predict weather conditions around the world. Temperature also affects air pressure because air contracts when it cools and expands when it is heated. So if air above a region of Earth cools, it does not extend to as high an altitude as the surrounding air. In this case, its pressure at higher temperature is lower than in the surroundings even when the pressure at the surface is the same as in surrounding areas. Then air flows into the cooler region at high altitude, making the total weight of air above the region greater than in the surroundings. This is a "high". The cool air descends to the earth's surface. Near the surface, the falling air spreads out,
The world’s total water supply is approximately 332.5 million cubic miles of water, which covers up about 70% of earth’s surface. With that much water inhabiting our planet, there obviously has to be a way to keep the water moving. We call this the water cycle, which has been around longer than we can know. The great thing about the water cycle is that it can never stop working because water will always be evaporated. In fact, we are now using the same water as we did during Earth’s beginning, thanks to the water cycle. Growing up, we all learned about the water cycle and its three simple stages. Those stages were evaporation, condensation, and precipitation. Come to find out there is a lot more that goes into the cycle than we first learned.
a change in the water cycle. Some places may experience more rain. Warmer temperatures will
Water covers about seventy one percent of Earth’s surface. Earth is the only planet to have stable bodies of liquid water on its surface which is crucial for all known life forms. Water is a substance which acts as a solvent in which organic compounds can mix, and it is the substance which is thought to be necessary to facilitate the formation of life. There are many forms of water which include ice, liquid, and gas. Because water can exist as a gas, it can be stored in the atmosphere and be delivered as precipitate. Water also helps regulate the climat...