How Candles Affect The Height Of Water Lab Report

The aim of the experiment was to find out how changing the mass effects the rise of the temperature of water.

The Dependent variable for this study is the amount of water absorbed by the paper towels. This will be measured in milliliters. The independent variable for this study is different brands of paper towels. The controlled variables will be the amount of water the paper towels are given to absorb, the size of the paper towels at the beginning of the experiment, and using the same measuring instruments in each trial. I will reduce the threat to internal validity by conducting the experiments in the

There are several parts to the experiment such as both the independent and dependent variables. The independent variable is controlled or changed during the experiment to test the effects on the dependent variable. The dependent variable is tested and measured during the test .A controlled variable is an example for an independent variable would be variable that is held constant throughout the experiment. An example is a theory that could extend a person’s life expectancy. The independent variable is the amount of vitamin given to the subject within the experiment. The dependent variable is the life span

1. For this experiment, what were the independent variable and the dependent variable? What were the constants?

Research Design: The independent variable of this project would be if there is already money in the tip jar. Furthermore, the independent variable can also be when there is no money in the tip jar. Thus, the two levels are there is money in the tip jar (this receives larger tips) or there is no money in the tip jar (receive less tips than you would if there is money in the tip jar). As people enter the bar and go to the bar the experimenter will roll the die and determine what group the person will be assigned to, the experimental (money in the jar) or the control (no money in the jar). At the same time the research

Try to repeat the experiment to compare the weight of the candle instead of its height. Do you think there will be any difference in your findings?

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.

In our Penny Lab, we wanted to extend what we were told to do with experimental design. We’re doing this because we wanted to prove what he thought our hypothesis had been, and a hypothesis can not be true unless it can be tested. We investigated what variables made the Penny Lab easier, or harder. As a class we decided to investigate variables like, dropping the penny from the same height, and applying the same pressure to the penny for each drop. But first we had to know what variables were, and which variables we needed to use in the experiment. The variables were, the independent variable, dependent variable, the experimental group, and the control group. We investigated this to show how much water a penny could hold, but we introduced

A. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason?

Variables: In this experiment, the temperature (in degrees Celsius) of the chemicals is the independent variable. To change the temperature, the materials are placed in a bath of water being heated by a hotplate.

Abstract: This experiment introduced the student to lab techniques and measurements. It started with measuring length. An example of this would be the length of a nickel, which is 2cm. The next part of the experiment was measuring temperature. I found that water boils around 95ºC at 6600ft. Ice also has a significant effect on the temperature of water from the tap. Ice dropped the temperature about 15ºC. Volumetric measurements were the basis of the 3rd part of the experiment. It was displayed during this experiment that a pipet holds about 4mL and that there are approximately 27 drops/mL from a short stem pipet. Part 4 introduced the student to measuring

The one candle got the water to rise up 1 inch and a half, two candles rose ¼ of an inch and the three candles got the water to rise up ¼ of an inch as well. Because of the results it was hard to match it with an explanation but the closest it supported was explanation 3 because of the water still rising a bit than nothing. Since more candles mean more carbon dioxide being created we came to conclude that there might have been CO2 molecules dissolving in the water causing it to rise a bit. The experiment disagreed with explanations 1 and 2 because there was no pressure in the outer of the flask to cause the water to rise up and the water barely rose which causes it to be that what should have caused the rising was the CO2

Constant Variable and Control Group:The control group was the respiration rate of the goldfish and lukewarm/normal water.Two controls were the size of the beaker,and the type of fish.

* In every experiment there are variables that affect the way an experiment will go. The three types of variables that are measured are Independent, Dependent, and Controllable variables. In my experiment the Independent variable is the three different models of paper airplanes that I have chosen to make and experiment with. The Dependent variable includes the distance the paper airplane goes. The Controlled variable is me making sure that I throw the paper airplanes from the same starting point a well as the same weather conditions. The controlled variable is the one that cannot be changed because it would affect the other two variables. In this case I threw them in my house since I have a very long hallway that leads into the front family room and there is no furniture that would interfere with the results.

6b.Water expands when heated. Imagine a bobber floating in a cold pond. Will that bobber float higher or lower in hot water? Justify your answer using Archimedes’s Principle.