Twelfth Grade Science Experiments (Page 136)

Afterimages Eye Science: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

In this week's spotlight: a trio of human biology and health science projects that invite teachers, families, and students to explore the way the human eye works. What happens when you stare at something for a period of time and then look away? You might continue to see the image, what is called an afterimage. We have versions of this exploration for an independent student project, a family activity, or a classroom activity! Afterimages: The Colorful Tricks Eyes Play… Read more

Algae String Mizuhiki Knots

STEM Activity

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Cultures around the world have developed knots for many uses. For example, the Inca people used knotted cords called Quipu for collecting data, keeping calendars, and even military organization. In Japan, knots are used in celebrations, food prep, and garments. Elaborate paper Mizuhiki ones, such as the examples in this activity are tied to mark important life events. Educators, a lesson plan is also available for this topic. Read more

Altitude and Weather

Science Fair Project Idea

Scientific Method

As you move up or down in altitude or elevation, the temperature and pressure will change. This is particularly striking if you live near a mountain range. During the summer, at low altitudes you may have temperatures in the 80's or 90's and still be able to see snow on mountain peaks at high altitude. You can test the effect of altitude by comparing temperature data from weather stations at high and low altitudes. You can test the effect of elevation by making your own weather balloon and… Read more

Aluminum Foil Boats: Doing Fun Science at Home during School Closures (Activity #29)

Blog Post

Follow along with a Science Buddies parent who is using family STEM activities to keep her kids learning at home during the COVID-19 school shutdown. New posts every Monday, Wednesday, and Friday. Today's adventure... building, floating, and sinking aluminum foil boats. Sinking and Floating Science We used to have an army of rubber duckies and other bath toys. Sometimes it felt like the toys took up more of the tub than the kids did! Those days… Read more

Animal Magnetism: Do Large Mammals Align Themselves with Earth's Magnetic Field?

Science Fair Project Idea

Scientific Method

We rely heavily on our senses to tell us about our environment. But in addition to the senses of touch, smell, taste, hearing, and sight, some animals are able to sense Earth's magnetic field. Migratory turtles and birds use this sense to guide them on long journeys. Homing pigeons use it to find their way home. New research suggests that large mammals, such as cows and deer, may also have the ability to sense the direction of magnetic north. In this animal behavior science project, you will… Read more

Answering Kids' COVID-19 Questions: Doing Fun Science at Home during School Closures (Activity #12)

Blog Post

Follow along with a Science Buddies parent who is using family STEM activities to keep her kids learning at home during the COVID-19 school shutdown. New posts every Monday, Wednesday, and Friday. Today's adventure... answering COVID-19 questions by building models of viruses and understanding how soap can help kill coronavirus. Activities to Address Kids' Questions About COVID-19 Do your children have questions about this coronavirus or the… Read more

Antioxidants

Science Fair Project Idea

Scientific Method

Antioxidants have become very popular in the news lately for their potential health and anti-aging properties. Antioxidants work by preventing oxidation reactions that produce free-radicals which can cause harm to the body. Try testing different vitamins for antioxidant activity. How do vitamins A, B, C, and E compare? Do some vitamins have more antioxidant activity than others? What are some other sources of antioxidants? Try testing extracts from proposed sources of antioxidants like coffee,… Read more

Are Childproof Containers Really Childproof?

Science Fair Project Idea

Scientific Method

Have you ever woken up in the middle of the night just not feeling well? Maybe your mom or dad gave you some medicine and you felt better after taking it. Medicine is a great tool in the fight against an illness, but medicine can be a poison if too much is taken. Similarly, household products can clean your home and make it smell great, but if eaten, can be poisonous. That is why most medicines and household products are stored in childproof containers. But are childproof containers really… Read more

Are Enzymes in Laundry Detergents Effective Stain Removers?

Science Fair Project Idea

Scientific Method

Some laundry detergents have added enzymes that break down proteins, helping to remove them from the cloth fibers, and thus remove stains. You can perform a scientific test of these enzymes' stain-fighting ability. Do background research on the enzyme(s) in the detergent, and on the substances you choose for making the stains. Try to predict for which substances the enzymes will be effective. Cut a piece of light-colored cotton cloth into identical 10 cm squares. Choose different… Read more

Are Laminates Stronger?

Science Fair Project Idea

Scientific Method

If you love to hit the half pipe with your snowboard or skateboard, then you have tested the strength and durability of laminates. Laminates are sandwiches of different materials that are glued together in layers to give strength and flexibility to an object. In this experiment, you can test if laminating wood can make it stronger and able to support a heavier load. How much weight can it take before it breaks? Read more

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