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Others Like “Caffeine and Heart Rate: A Pharmacological Study Using Daphnia magna”

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Science Fair Project Idea
thumbnail One way to test for the presence of toxic compounds in a water sample is a bioassay. In a bioassay, a living organism serves as a detector for toxins—the same way canaries were used in coal mines to detect invisible toxic gases. In this project, water fleas (Daphnia magna), a freshwater crustacean, are used in a bioassay to monitor water quality. Many variations of this experiment are possible. Read more
EnvSci_p043
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty items
Cost Average ($40 - $80)
Safety Adult supervision required when collecting sediment samples from parking lot.
Science Fair Project Idea
thumbnail Changes in the environment, or stimuli, affect your behavior and movement over the course of a day: When you get cold, for instance, you might get up and put on a sweater. Or if it is sunny and warm, you might go outside to play sports or go for a walk. Different stimuli, including light, affect the movement of other organisms as well. But how does the type of light influence their movement? Do they respond differently to different kinds of light, depending on other factors in their… Read more
EnvSci_p006
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty items, like a Daphnia magna culture kit, can be ordered from [# ProjectGuide Name="Advanced.ApprovedSuppliers" Value="HtmlAnchor" HtmlText="online vendors" #] such as [# Link Name="EnvSci_p006.1" Value="HtmlAnchor" #]. Alternatively, you could purchase Daphnia possibly from a local tropical fish store.
Cost Average ($40 - $80)
Science Fair Project Idea
Caffeine is a type of chemical called a stimulant. When you drink a caffeinated beverage, the caffeine enters into your blood stream dilating the capillaries and causing blood to flow more quickly. This gives your body a feeling of speeding up which can cause the jitters and wakefulness. How does caffeine affect the physiology of other animals? You can use over-the-counter caffeine supplements, like Vivarin, to test the effects of caffeine on animals. Try dissolving the caffeine in… Read more
Zoo_p030
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Drosophila, daphnia, and other small invertebrate animals can be ordered from [# ProjectGuide Name="Advanced.ApprovedSuppliers" Value="HtmlAnchor" HtmlText="online vendors" #].
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail Here is an interesting project that could be approached from several different scientific angles: Environmental Science, Weather & Atmosphere, Chemistry, or Plant Biology. You can probably think of your own variations to emphasize the scientific area that most interests you. Read more
EnvSci_p015
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Time Required Very Long (1+ months)
Prerequisites Must be familiar with titration or be able to learn how titration is used in this experiment
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail How does your family thaw and cook meat? Have you ever wondered if it is the safest way? In this practical science project, you can find out and shed light on safe practices in the kitchen by investigating how many viable bacteria are present in samples of meat that have been thawed or cooked using different methods. Read more
MicroBio_p015
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Time Required Average (6-10 days)
Prerequisites To do this project, you will need access to a laboratory with facilities for culturing bacteria. You should be familiar with sterile technique and proper handling of bacterial cultures.
Material Availability Specialty items
Cost High ($100 - $150)
Safety Standard precautions for handling bacterial cultures and bleach.
Science Fair Project Idea
thumbnail Chemicals from Earth's atmosphere are making their way down to the planet! Not in spaceships, but in rain. The acid rain can infiltrate ground water, lakes, and streams. How does acid rain affect aquatic ecosystems? Read more
EnvSci_p016
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Time Required Average (6-10 days)
Prerequisites None.
Material Availability Items will need to be special ordered. See the Materials and Equipment section for more details.
Cost Average ($50 - $100)
Safety No hazards.
Science Fair Project Idea
thumbnail Here is a project that is almost like a magic trick: with a strong magnet and a simple apparatus you can build yourself, you can make a coin "walk" up and down a wire coat hanger! This project is an interesting way to learn about the distance over which magnetic forces act on magnetic materials. Read more
Phys_p024
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Specialty items
Cost Low ($20 - $50)
Safety Use strong magnets with care! See safety notes below.
Science Fair Project Idea
thumbnail Crown gall is a plant disease caused by the soil bacterium Agrobacterium tumefaciens. This project uses tomato plants to investigate whether garlic extract can prevent crown gall infection. Read more
MicroBio_p024
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Time Required Long (2-4 weeks)
Prerequisites You will need a plant with an existing crown gall infection as a source of bacteria for this project.
Material Availability Readily available
Cost Low ($20 - $50)
Safety Use caution when cutting with sharp knife or razor blade.
Science Fair Project Idea
thumbnail Does your hair go crazy when the weather turns damp? Did you know that strands of hair can relax and lengthen when the humidity increases and then contract again when the humidity decreases? In fact, hair strands can be used as the basis for a hygrometer, a device which measures the humidity level in the air. Can a human hair hygrometer also detect changes in hair structure caused by chemical lightening? This project shows you how to find out. Read more
MatlSci_p020
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Specialty items
Cost Average ($50 - $100)
Safety Adult supervision required for working with hydrogen peroxide-based hair lighteners. Wear protective gloves and eye wear.
Science Fair Project Idea
thumbnail Most people are not aware that the soil around them is a battle scene. The combatants are very small—bacteria on one side and bacteriophage on the other. The bacteriophage (or phage for short) try to pierce the outer coats of the bacteria and inject them with phage DNA. If successful, the DNA will take over the inner machinery of the bacterial cells and force them to make many copies of the phage. After the copies are made, the bacterial cells break apart, releasing new phage that start… Read more
MicroBio_p029
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Time Required Long (2-4 weeks)
Prerequisites This is an advanced science project that requires access to a laboratory with a water bath and 37°C incubator. The kit you will use has enough supplies to perform the procedure one time. To repeat the procedure, you should order additional supplies (listed in the Materials and Equipment section), or make your own media and agar plates. Working with a science teacher or other mentor who is familiar with growing bacteria and titering phage would be helpful.
Material Availability You will need to order the bacteria, the phage, and the supplies from an online science supply store. See the Materials and Equipment list for details.
Cost High ($100 - $150)
Safety The bacteria (E. coli B) and the phage (T4r) are not dangerous, but you should follow common-sense safety guidelines and wear gloves and safety goggles when working in the lab. Adult supervision is recommended.
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