My science fair topic is Evaporation. I chose Evaporation because we talk about evaporation but most of us don't see it often at all. Evaporation is an interesting topic and and a piece of matter people don’t really put their interest in. Evaporation happens the Water cycle. An ocean like the pacific evaporates into the clouds, condensates, and precipitates. It happens over and over again. I bet that people put their drinks out and never cover it before going to sleep and a few hours later, It has evaporated. science fair question is How can the type of clear liquid affect the rate of evaporation?
An independent variable is an item in your project that you will be changing. It can the main part of your project and can be found in a question. The liquids
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It's on the last part of your question. The rate of evaporation is whats changing. When a liquid sits in one place and its molecules turn into a gas, Then it's called evaporation. No matter how cold or hot it is, it can still evaporate. When matter has a high energy then the water molecules have a high energy too and go through a change. Evaporation focuses on individual molecules and not on the amount of energy. The energy can be low and still evaporate. Not all liquids are the same. There are some that evaporate faster in wind. When liquid molecules move around, They bump into each other. When they do bump into each other then one molecule gains energy and one loses energy. If one molecule gains enough energy then the molecule can turn into a gas. In other words, it has evaporated.
Independent Variables and Dependent Variables have a cause and effect relationship can be found in any science fair project(Problem, Hypothesis) such as, Riley's Science Fair Project. If Riley egg dropped in bubble wrap(Cause), then it will break less(Effect) than eggs wrapped in other materials because bubble wrap adds more support. Here is Riley's Science Fair
Dependent variables are ones that change due to the independent variable. Independent variables are variables that can be manipulated or measured. This influences the dependent variables.
In this case, the independent variable is the gender and the dependent variable is the
2A. Evaporation is related to the properties of matter because it is a liquid and a gas. We know this because there are three states of matter which are soild, liquid and gas since evaporation first starts as a liquid (water). Then it turns into gas (cloud).
1. For this experiment, what were the independent variable and the dependent variable? What were the constants?
What is the difference between an independent variable and a dependent variable? a. The difference between an independent and dependent variable is that an independent variable is the variable which is manipulated in an experimental design, while the dependent variable is the variable which is measured and is dependent on the level of the manipulated independent variable. (page 85) 6. Distinguish between laboratory and field experiments.
Describe what you understand by ‘independent variable’ and ‘dependent variable’ in a scientific study? ( 5 points) An independent variable is something you have control over, what you can choose and manipulate. It is a variable that stands alone and doesn’t change by other variables. Although in some cases, you may not be able to manipulate the independent variable. It could be already there and or fixed. A dependent variable is the variable that’s being tested in an experiment. If the experimenter changes the independent variable, the change in the dependent variable is observed and recorded. For example a scientist is testing the effect of light and dark on the behavior of moths by turning a light on and off. The independent variable is the amount of light and the moth’s reaction is dependent variable. A change in the independent variable (amount of light) directly causes a change in the dependent variable (moth
The dependent variable refers to the status of the 'effect '(or outcome) in which the researcher is interested; the independent variable refers to the status of the presumed 'cause, ' changes in which lead to changes in the status of the dependent variable…any event or condition can be conceptualized as either an independent or a dependent variable. (Rosenthal & Rosnow, 1991).
1 What is the ONE independent variable in this study? What are the dependent variables?
The independent variable for the experiment was the paper towels. The dependent variable was the absorbency and strength. The constants for the experiment were the size of the paper towels that were used, the amount of water, the size of the beaker, the size of the cylinder and the amount of the weight.
A dependent variable is the outcome or affected concept or characteristic from the independent variable.
b. Independent variable-The treatment or experimental variable manipulated by the researcher to create an effect on the dependent variable.
Evaporation often implicitly includes transpiration from plants, though together they are specifically referred to as evapotranspiration. Total annual evapotranspiration amounts to approximately 505,000 km³ of water, 434,000 km³ of which evaporates from the oceans.[5]
The second factor, which we believe, plays a role in the rate at which evaporation occurs is surface area. Surface area of a liquid could be defined as the area or amount of water which in constant contact with the atmosphere. Surface area plays a large role in our weather systems, as shown by our oceans. Our oceans our widely exposed to the atmosphere and have a large surface area. This in turn allows them to produce most of the moisture in the air through evaporation.
Evaporation, in general, involves a substance changing its physical state from a liquid to a gas (US Department of Commerce, n.d; National Geographic Society, 2013; Northwest River Forecast Centre [NRFC], n.d). An example of this is when the body heats up during exercise or due to temperature, and releases sweat to try and cool down and producing water onto the skin (US Department of Commerce, n.d). Energy is required for evaporation to occur, and this energy source can come from the atmosphere, entities such humans, or in the case of the water cycle, the sun is the source of energy (US Department of Commerce, n.d). During the hydrologic cycle, evaporation occurs when the sun interacts with liquid water such has lakes and rivers, the ocean and soil, to cause water particles to become water vapour by heating the water (National Geographic Society, n.d; Miller & Spoolman,
Independent variable and subject variables are similar in the fact that both types of variables can impact the results of a test. Both independent and subject variables can be used to assess relationships between two items (Kiess & Green, 2010, p. 10-12). The difference arises in the control the experimenter has: near complete when dealing with independent variables, and very limited when working with subject variables (Kiess & Green, 2010, p. 10-12). For instance, a researcher can alter the amount of light in a room for a vision test, but cannot control if the subject has limited eyesight ability due to a congenital disorder.