Second Grade Science Experiments (Page 165)

A Ground-Breaking Revelation: Testing Longitudinal Waves in Different Soil Types

Science Fair Project Idea

Scientific Method

Did you know that waves travel through the Earth's crust all the time? One major source of these waves is earthquakes, although ground motion can also be caused by something man-made, such as a mine blast or nuclear explosion, or other natural events, such as landslides or volcanic activity. How does an earthquake cause these waves? The entire outer shell of the Earth, known as the lithosphere, is made up of tectonic plates that are constantly moving. There are seven or eight large… Read more

A Prescription for Success: Drugs & Your Genetics

Science Fair Project Idea

Scientific Method

Have you ever known someone who had a bad reaction to a prescription drug? Although pharmaceutical companies test new drugs on a large number of people to make sure the drug works the way it is supposed to, often a small percentage of people respond differently to the drug. A person's genetics plays a large role in determining his or her response to a given drug. Our genes are made up of hundreds to millions of nucleotides of DNA (deoxyribonucleic acid), the genetic code. If just a single… Read more

A Simple Sourness Detector

STEM Activity

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Have you ever wondered why some foods or drinks taste sour, whereas others do not? You might know that your tongue is picking up all kinds of flavors, including salty, sweet, bitter, and sour. But what makes something taste sour? The sour taste is actually influenced by the pH and acids present in foods. In this activity, you will find out how sour different foods are by testing foods and drinks for the presence of acids with baking soda. What do you think is the sourest food you can find in… Read more

A Soluble Separation Solution

STEM Activity

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Have you ever mixed sand and salt together and wondered how you could separate them again? If you had to separate them, would you have nightmares of tiny tweezers, a magnifying glass and hours spent picking grains of salt and sand apart? Don't be afraid, there is another way! Using the differences in solubility between salt and sand, you can find the simple "solution" to this problem. Read more

A STEM Videos Breather: Doing Fun Science at Home during School Closures (Activity #24)

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... some family time with STEM videos. Family Time with STEM Videos By now, it's a theme we all know: juggling work, family, a parent's role in remote learning, and the very real anxieties of the COVID-19 pandemic... it's a lot. This past… Read more

Adding Art: Doing Fun Science at Home during School Closures (Activity #6)

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...food dye, shaving cream, and a bit of cool science transform paper into beautiful marbled art. Artists are Scientists, Too My kids love art. Drawing, painting, clay — all these things bring them joy. On the other hand, while I… Read more

Aerodynamics and Hockey: Does the Force of Drag Have an Effect on the Distance the Puck Will Travel?

Science Fair Project Idea

Scientific Method

Think of a way to launch the puck with a reproducible force, and examine the effect of launching the puck in different orientations on the distance it travels. For more information on the physics, see Haché, 2002. Read more

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

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