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Others Like “Under Pressure: Does a Child's Blood Pressure Depend on His or Her Age?”

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Science Fair Project Idea
People often call cardiovascular disease a "silent killer." This disease sneaks up and causes damage, but patients don't realize it—until serious symptoms start. That is why physicians recommend keeping your cardiovascular system healthy. A healthy cardiovascular system gives us the energy and the stamina to do all of the things that we want to accomplish, such as do our best in school and perform well in sports. But what makes a cardiovascular system unhealthy, and what are the… Read more
HumBio_p032
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Time Required Short (2-5 days)
Prerequisites None
Material Availability You will need access to a hand drill with bits of different sizes. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Use caution when using a drill. Be sure to wear safety goggles. Adult supervision is recommended.
Science Fair Project Idea
Doctors use many complicated tools to check the health of patients. But you can make some medical tools at home—like a stethoscope! A doctor uses a stethoscope to listen to a patient's heart. In this science project, you will make three of your own homemade stethoscopes and figure out which stethoscope design works best and why. Read more
HumBio_p033
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Adult assistance is needed for cutting tubing and hoses with the scissors.
Science Fair Project Idea
Did you know that your heart beats at different rates depending on what you're doing? The more physically active you are, the faster your heart beats. You can measure the rate your heart is beating by taking your pulse. This science fair project will show you how to take your pulse and help you investigate which daily activities get your heart beating the fastest. Read more
HumBio_p014
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
The holidays are a wonderful time, when lots of good foods and good smells come from the kitchen. But have you noticed that if you stay in the kitchen awhile, you no longer notice the delicious smells? Don't worry! Your nose is not broken, you are just experiencing olfactory fatigue—basically, that's when your nose takes a nap. But what is behind olfactory fatigue and what happens when you experience it? Does a person's sense of smell "get tired" in the same way for different smells? Put… Read more
HumBio_p031
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
Have you ever seen a baby in the park and wondered if it was a boy or a girl? Maybe once you found out the gender, you thought how sweet, mischievous, or cute the baby was. But wait…do you think that the words you used to describe the baby might be based on your own gender stereotypes? A gender stereotype is when you expect someone to act a certain way simply because he or she is a boy or a girl. In this human behavior science project, you will investigate whether young children use gender… Read more
HumBeh_p054
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Time Required Very Long (1+ months)
Prerequisites You will need access to three equally sized groups of either 4th or 5th graders (60–90 test subjects). The children should all be able to read without assistance.
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
A day at the beach is a wonderful way to spend time with your family and friends. You can swim, play games, and build sand castles. But have you ever thought about how all of that sand got there and wondered why the shoreline weaves in and out of the ocean? In this science project, you will investigate how ocean waves build beaches by making a model of the beach and shoreline. All you need is a tiny surfer and a beach volleyball court for your model, and you can imagine that you are in… Read more
OceanSci_p011
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
When you're chasing after your dog, do you ever stop and say, "Wait, I have to catch my breath!"? Do you think that there are times when your dog feels like that, too? Does your dog's respiration rate change when you two are playing active games together? Try this playful science project to find out! Read more
MamBio_p019
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Time Required Short (2-5 days)
Prerequisites None
Material Availability To do this project you'll need to have access to a dog that you can play with.
Cost Very Low (under $20)
Safety Be sure to work with an animal you are familiar with. If you work with an animal that doesn't live with you for this science project, make sure the owner is present the whole time so that the animal feels comfortable.
Science Fair Project Idea
Okay, now you've done it. You goofed off, didn't study for your math test, and didn't do well. Mom and Dad are not going to be happy. In fact, they might even be angry. They don't say anything when they see your test, but you can tell from their faces that they are angry. But how can you tell? How can you tell if someone is angry, or happy, or sad? The answer is that you have learned how to tell someone's emotional state from his or her facial expressions. Are facial expressions of happiness or… Read more
HumBeh_p052
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Time Required Very Long (1+ months)
Prerequisites You must have access to a large group of test subjects, from ages 6 years to 12 years.
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
Have you ever been so cold sitting in your house in the winter that you feel icicles could grow off your nose and your feet could turn into blocks of ice? Or have you ever been so hot in your house in the summer that sweat just drips off you? Making yourself comfortable can mean turning on the heater or the air conditioner—but that costs money. Still, being cozy or cool doesn't have to cost a lot of money if you use a geothermal heat pump. In this project you will build a model… Read more
Energy_p040
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Time Required Average (6-10 days)
Prerequisites None
Material Availability To make a geothermal heat pump you will need a pond pump. See the Materials and Equipment list for details.
Cost High ($100 - $150)
Safety Exercise caution when working with electrical equipment and water. Adult supervision is required.
Science Fair Project Idea
Have you ever ridden on a hovercraft? It is like gliding on a cushion of air! In this science project, you will make your own mini hovercraft using a CD or DVD and a balloon and investigate how the amount of air in the balloon affects how long the hovercraft hovers. Read more
Aero_p033
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety If using epoxy, adult assistance is required, use caution, and follow all of the instructions and safety warnings on the packaging.
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