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Topics > Biology > Human anatomy

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Measuring hair growth rates and fiber strengths under different conditions
I get a few students contacting me looking for ideas on science projects about hair each year. This can be difficult because hair itself is rather uninteresting and does not do much. It doesn't respond to stimuli, it's hard keratinized material, and it's dead. It's like trying to think of something useful to do with nail clippings (which are made of the same material). As adults are obsessed with

Difficulty: Elementary school

Observing blood cells
What are blood cells? What do they look like? What functions do they perform? How can I recognize the different categories? This is a short description of the blood cells and includes a simple experiment which allows you to become familiar with the cells of this precious liquid. The blood consists of a suspension of special cells in a liquid called plasma. In an adult man, the blood is about 1/

Difficulty: Middle school

This experiment teaches you how to build your own homemade stethoscope and how to use it to measure a person's heartbeat
Over 170 years ago, a man named Laennec invented the first stethoscope. Before your class goes into the Institute's Giant Heart in the BioScience Exhibit stop and see it. It is a wooden tube about 1 inch in diameter and about 10 inches long. This experiment teaches you how to build your own homemade stethoscope and how to use it.

Difficulty: Elementary school

What are the best places on your body to meassure your pulse?
The pulse represents the variation in blood pressure from diastole to systole. During diastole blood pressure falls, but increases after systole as the heart pumps more blood into the arteries. You feel this difference when taking your pulse. Doctors use a device called a sphygmomanometer

Difficulty: Middle school

What does phosphoric acid do to tooth enamel?
The purpose of this experiment was to determine what the effect of different levels of phosphoric acid is on tooth enamel.

Difficulty: Middle school

What is the cause of today's problems in the ozone layer?
Ozone is just the right size and shape to absorb energy from the sun that can be dangerous. The ozone forms a layer that absorbs some of the sun's energy. That layer protects us.

Difficulty: Elementary school

What is the effect of different types of fluids on our kidneys?
The purpose of this experiment is to show the kidneys ability to alter the output of urine in response to the ingestion of different liquids such as tap water, isotonic saline (gatorade or any other sport drink), and coffee. Various fluids affect the kidney in different ways. My hypothesis states that coffee will cause the kidneys to excrete urine more frequently than the other fluids consumed in

Difficulty: High school

What is the effect of music beat on a kid's blood pressure?
The purpose of this experiment was to determine how two different tempos of music would effect 6th grade boys' blood pressure.

Difficulty: Middle school

What types of alcohol have a greater dehydrating effect on our bodies?
The purpose of this experiment was to find which alcohol dehydrates an orange more. In turn this was supposed to give me an idea of which one would dehydrate a persons' body more. I believe that the higher the proof of alcohol, the higher the dehydration rate will be.

Difficulty: Middle school

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