How Color Affects Heating By Absorption Of Light

Observe the characteristics of flame colour. Then compare the observations with a table describing the colors various metals produce.

An investigation to measure the percentage light transmission, using a colorimeter, through a solution, from pH 2 – pH 9, in which jelly cubes were immersed over a 24 hour period

The procedures for experiment A, B, and C all start the same. The first step is to put on goggles and get the data collection device set properly. The labquest needs to be plugged into the colorimeter accurately so that a click is heard when putting it in. The labquest needs to be reading digitally and the colorimeter needs to be set to 635 nm. Then shake the chloroplast solution and take a clean cuvette and fill it with 3 mL of distilled water, 3 drops of the chloroplast solution, and cap it. This is used as a blank to calibrate your labquest. Double check that the labquest is reading absorbance, this assures that the colorimeter is plugged into the labquest accurately. Insert the blank into the colorimeter and hit the calibration button. Take out the blank and empty it. The labquest is now set to experiment with. Make sure that the heat bank is set in front of the lamp and that the lamp is on. The cuvette must be placed on the opposite side of the heat bank in the path of light in the box so that no other light can interfere with the experiment.

Have you ever wondered whether a candle burns more quickly on a hot day, than on a cold day? Or is it the other way around? This science fair project was carried out to compare how quickly a candle will burn at different room temperatures. The experiment was done by measuring how much of a candle will melt in 30 minutes when placed in an environment with surrounding temperatures of 20°C, 25°C and 30°C.

The experiment can also be done to compare the burn rate of different colored candles.

When a beam of sunlight passes through a specially shaped glass object called a prism, the rays of different wavelengths are bent at different angles. The bending breaks up the sunlight into a beautiful band of colors. This band contains all the colors of the rainbow and is called the visible spectrum. At one end of the spectrum, the light appears as violet. It consists of the shortest wavelengths of light that we can see. Farther along the spectrum, the light has increasingly longer wavelengths. It appears as blue, green, yellow, orange, and red, each shading into its neighboring colors in the spectrum. The longest wavelengths of light that we can see appear deep red in color. Some descriptions of the spectrum also mention the color indigo, which is closely related to blue, between violet and blue.

Use approximately 2 feet of aluminum foil to wrap around the burner stand and beaker to minimize heat loss.

To check the absorbencies at different wavelengths, we first placed the blank cuvette into the spectrophotometer and set the absorbance to zero. Control cuvettes had to be covered by aluminum to prevent them from light exposure. We then placed all the cuvettes into the ice bath

When the beetroot sample is heated for a longer period of time, it is exposed to the vigorous and frequent vibrating molecules for a longer duration. This further disrupts the cell membranes making them more fragile, thus more pigment will leak out into the external solution. With more leakage of the betacyanin pigment, the % transmittance should be lower, indicating that the % of light that is able to pass through the beetroot solution should be less as duration heated increases.

To begin the experiment, students first obtain a LabQuest with a temperature probe. First, you retrieve about 20gs of t-butyl alcohol and put it in a pre-massed test tube. Students then prepare one beaker with ice water and another beaker with warm water. Students will first put the t-butyl alcohol into warm water to prevent it from freezing in room temperature, and put the temperature probe in the test tube. Afterwards, students will place the test tube containing the t-butyl alcohol and put it in the ice water until the temperature begins to

Get worms and put 1 in each of the test tubes in the different temperatures of water.

Science Buddies Staff. "Absorption of Radiant Energy by Different Colors" Science Buddies. Science Buddies, 28 July 2017. Web. 18 Oct. 2017 (-- removed HTML

element of a candle can affect how fast it burns, I wanted to see how this experiment turns out http://candles.lovetoknow.com/Do_White_Candles_Burn_Faster_than_Colored_Candles

7. Wait for approximately 5-10 minutes before measuring the extent of colour (diffusion) that has spread from the smartie

With today’s science, light becomes more specifically perceived as a spectrum. The specific name for this spectrum is the electromagnetic spectrum, which contains many types of waves (NASA, Electromagnetic Spectrum). In Figure 2, the spectrum shows a variety of wavelengths with specific wavelengths classified by its length. The range of wavelengths humans can see wavelengths that are around 400 – 700 nanometers (nm) as colors while all other electromagnetic waves are simply blind to humans. The interesting classes for light that are used to measure are microwave and infrared light. The laser is