Home Store Project Ideas Project Guide Ask An Expert Blog Careers Teachers Parents Students

Others Like “How does the Intensity of Light Change with Distance?”

Showing top 20 results.
Science Fair Project Idea
A nice hot cup of tea sure can wake and warm you up in the morning. In this project, you will investigate the chemistry of tea. The longer you steep a tea bag in hot water, the stronger the tea will be. But how does the strength of the tea change with longer brewing time? In this project you will make a very simple electronic device to measure the strength of tea. The device will determine how strong the tea is by measuring the amount of light the tea absorbs. Read more
FoodSci_p058
+ More Details
- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty electronics items are required. A kit is available from the . Time required includes shipping for the kit.
Cost Average ($50 - $100)
Safety Adult supervision is required when boiling water.
Science Fair Project Idea
Don't you hate it if you want to pour yourself a cup of milk and all you get is milk clumps? What happened to the milk is called coagulation, which is the mechanism that occurs when proteins in the milk clump together. Without coagulation, or curdling, there wouldn't be any cheese or yogurt which is why it is a very important process in the food industry. But what makes milk curdle? In this science project you will use pineapple juice to curdle milk and measure the coagulation process over time… Read more
BioChem_p032
+ More Details
- Less Details
Time Required Long (2-4 weeks)
Prerequisites A familiarity with basic chemistry and experience with simple electronics would be helpful, but is not absolutely required.
Material Availability For your convenience a kit is available for this project from the . Time required includes shipping for the kit. For data analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel® is helpful.
Cost Average ($50 - $100)
Science Fair Project Idea
Do you read the list of ingredients in foods and drinks before you buy them at the grocery store? If you do, you may have noticed that many of the items, especially colored drinks, contain dyes with names such as FD&C Blue 1, Red 40, or Yellow 5. But how much dye is needed to create all these colors? In this chemistry science project, you will build a simple spectrophotometer that is able to measure the concentration of colored chemicals in solutions. You will test your device by measuring… Read more
Chem_p075
+ More Details
- Less Details
Time Required Long (2-4 weeks)
Prerequisites Some knowledge of basic chemistry, as well as familiarity with electronics, would be helpful, but is not required.
Material Availability For your convenience a kit is available for this project from the . Time required includes shipping for the kit. For data analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel® is helpful.
Cost Average ($50 - $100)
Science Fair Project Idea
Dimmer switches let us control the brightness of a light, anywhere from completely off to full brightness. This can be nice when you want to set the brightness "just right," as opposed to a regular light switch that only lets you turn a light on or off. It turns out that you can make a dimmer switch out of an everyday object—a pencil! Try this project to find out how a dimmer switch can control the brightness of a light. Read more
Elec_p056
+ More Details
- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability For your convenience a kit for this project is available at the . Estimated project time includes time for shipping the kit.
Cost Low ($20 - $50)
Safety Short circuits can get very hot and present a burn hazard. Never connect the positive and negative ends (red and black wires) of the battery pack directly to each other. Adult supervision is required for whittling the pencil.
Science Fair Project Idea
What do you do with your old wooden pencils when they get too short to hold? Don't throw them away; you can use them to make circuits! This project will show you how to use pencils to make resistors, an important part of many electrical circuits, and test how they affect the brightness of a lightbulb in a simple circuit. Read more
Elec_p013
+ More Details
- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability A kit for this project is available from the . Estimated project time includes time for shipping the kit.
Cost Low ($20 - $50)
Safety Short circuits can get very hot and present a burn hazard. Never connect the positive and negative ends (red and black wires) of the battery pack directly to each other. Adult supervision is required for cutting the pencils.
Science Fair Project Idea
Objects that glow in the dark hold a special place in the imagination of both children and adults. The lights go out at night, but these odd things refuse to disappear. Where does the light come from? Do they work in any climate? In this science fair project, you will make a very simple electronic device to measure the light given off by luminescent materials. The device will be used to study how temperature affects luminescence. Read more
Chem_p072
+ More Details
- Less Details
Time Required Long (2-4 weeks)
Prerequisites Familiarity with basic chemistry and electronics would be helpful, but is not required.
Material Availability For your convenience a kit for this project is available from the . Time required includes shipping for the kit. For data-analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel® is helpful.
Cost Average ($50 - $100)
Safety Use caution when using the drill or knife. Wear safety goggles when using the drill.
Science Fair Project Idea
Have you ever wondered how your clothes get their color? Dyeing textiles is a very complicated process and involves a lot of chemistry. Not only are the properties of the dye and fabric important, but the dyeing conditions also have to be exactly right to get optimal color adsorption. Curious about how it works? In this science project, you will color wool with Kool-Aid® and explore the chemistry of dyeing. Read more
Chem_p106
+ More Details
- Less Details
Time Required Average (6-10 days)
Prerequisites Knowledge of basic chemistry is helpful as well as a good understanding of mathematical operations such as algebra and simple linear regression.
Material Availability This project requires special electronic parts. A kit is available at the . Estimated time required includes time for shipping the kit. For data analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel®, is helpful.
Cost High ($100 - $150)
Safety This project requires working with boiling water. Make sure to take precautions to prevent burns from the hot liquid.
Science Fair Project Idea
Your drinking water probably started out brown and muddy. Are you surprised? Maybe you were picturing it flowing from a clean mountain spring instead? All over the world, including in 68% of American homes, people get their drinking water from rivers, lakes, and other surface waters. This water is filled with dirt, debris, and other contaminants as it travels hundreds of miles. So, how does your drinking water go from brown and muddy to crystal clear? Often, flocculants—substances that… Read more
EnvEng_p039
+ More Details
- Less Details
Time Required Average (6-10 days)
Prerequisites Some basic knowledge in chemistry would be helpful, but is not necessary.
Material Availability This project requires special electronic parts. See the Materials and Equipment list for details. For data analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel®, is helpful.
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
Generating power from mud sounds like science fiction, but it is actually real science, and a promising source of alternative energy. Topsoil is packed with bacteria that generate electricity when placed in a microbial fuel cell. Because such bacteria-laden soil is found almost everywhere on Earth, microbial fuel cells can make clean, renewable electricity nearly anyplace around the globe. They are an up-and-coming technology that scientists and engineers are working to make even more… Read more
Elec_p071
+ More Details
- Less Details
Time Required Very Long (1+ months)
Prerequisites We recommended that you have a basic knowledge in physics of electricity and familiarity with the concepts of conductivity, electric current, resistance and electrical power. Having used a multimeter before is helpful, but not required.
Material Availability The microbial fuel cell kit needs to be special-ordered from the
Cost Average ($50 - $100)
Safety Be sure to wear the gloves supplied with the kit when handling the microbial fuel cell's electrodes (its cathode and anode). The electrodes are made of a conductive material called graphite fiber and should not be placed near electronics, power plugs, or have their fibers dispersed in the air. The fibers will cause electrical shortages when in contact with electronics.
Science Fair Project Idea
If you want to get your friend's attention at a crowded sporting event with lots of people cheering, you need to shout. If you're trying to do the same thing in a quiet library, a whisper works. The detection limit for each of our senses depends on the amount of "background" stimulation that is already present. This project uses an LED control circuit to investigate detection of changes in light levels. Read more
Elec_p039
+ More Details
- Less Details
Time Required Short (2-5 days)
Prerequisites Understanding of Ohm's Law and an understanding of logarithms. Note: the biggest expense is a powered, solderless breadboard, which can be used for future explorations in electronics.
Material Availability Specialty items
Cost Very High (over $150)
Safety No issues
1 2 >
Search Refinements
Areas of Science
Behavioral & Social Science
Earth & Environmental Science
Engineering
Life Science
Math & Computer Science
Physical Science
Difficulty
 
Cost
Time
Material Availability