First Grade Science Experiments (Page 198)

Skipping Science: An Experiment in Jump Rope Lengths

STEM Activity

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Have you ever wondered how you could do jump rope faster? The U.S. jump-rope record for the greatest number of jumps in one minute is 367! That's more than six jumps a second! How close do you think you can get to that number? What are some of the factors that will help you jump faster? One is the length of the jump rope! Read more

Skunk Attack! Test Different Remedies to Remove Skunk Odor

Science Fair Project Idea

Scientific Method

Have you or one of your pets ever been sprayed by a skunk? Hopefully not, but if you have, you probably know that the smell can be very unpleasant and hard to get rid of. There are many "folk remedies" for getting rid of skunk scent, but if you ever do get sprayed by a skunk, how will you know which one to try? In this science project, you will test the ability of various mixtures to remove the bad scent from rags that have been contaminated with bottled skunk scent, and determine which one… Read more

Sliding and Friction: Weekly Science Activity

Blog Post

In this week's spotlight: a fun physics activity that turns exploring the relationship between friction and sliding into a cool hands-on exercise. With a rubber band and a stack of coins, families can slingshot the coins on various surfaces to see how the surface affects how the coins slide. This science activity may feel like a game, but there is great science to be observed, so grab a rubber band, make a finger-based slingshot, and let the coins slide! Effect of Friction on… Read more

Sliding Science: How are Landslides Caused?

STEM Activity

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Have you ever seen a video of a landslide? Landslides are powerful geological events that happen suddenly, causing fear in people who live in areas with unstable hills, slopes and cliff sides. Each year in the United States, landslides can cause billions of dollars in damages, in addition to changing the environment and damaging the surrounding habitats. In this science activity, you will model landslides using a clipboard and pennies, and investigate how friction and the angle of a… Read more

Slime Three Ways: Doing Fun Science at Home during School Closures (Activity #25)

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... making several different types of oozy slime. Slimy, Goopy, Tactile Fun The messier the better — that's what my kids seem to think. From mud pies to crazy food concoctions, my children have always loved mixing up ingredients to… Read more

Slimey Likes It! Studying Chemotaxis in Physarum Polycephalum

Science Fair Project Idea

Scientific Method

In this biology science fair project, you will observe how the Physarum polycephalum (P. polycephalum) organism responds to various amounts of glucose. P. polycephalum is easy to grow in a petri dish and responds in complex ways to its environment. Will it grow toward the chemical as it looks for a meal, or will it flee, trying to avoid further contact? Try this science fair project to learn more about chemotaxis in the fascinating Physarum polycephalum. Read more

Slinking Slinkies

STEM Activity

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Have you ever watched a Slinky "walk" down a flight of stairs and wondered how it works? It's a fascinating thing to see and a big part of the Slinky's appeal. These spring toys have been popular for well over half a century; your parents, or even grandparents, may have played with them. Slinkies not only make fun toys, they are also great for doing physics and engineering activities. In this activity you will investigate how the angle of an inclined plane affects how well a… Read more

Slip Sliding Away: Experimenting with Friction

STEM Activity

Have you ever driven up a mountain, seen a sign reading "Hazard! Icy Roads Ahead," and wondered why ice makes roads dangerous to drive on? The answer has to do with friction—specifically, the lack of it. Specifically, in the case of driving a car down the road, the friction that allows the car to move occurs between the tires and the road. This friction normally allows the car to "grip" the road—keeping the tires in contact with the relatively rough road… Read more

Slippery Slopes and Sticking Surfaces: Explore the Forces of Friction

Science Fair Project Idea

Scientific Method

Whoopee! No matter what age, who doesn't like flying down the slides at parks and pools? In this experiment, you might be surprised what you can learn about the fascinating forces of friction while sliding down (or sticking to) those fun, slippery slopes. Caution: only speed demons need apply for this activity. Read more

Slippery Slopes and the Angle of Repose

STEM Activity

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Have you ever seen an avalanche or landslide roll down a hill? Why is it that at one moment, everything seems fine, then suddenly the mountain begins to slump? It has something to do with how the earth or snow is piled up on the mountain. Generally, granular materials such as snow or earth pile up relatively well. However, if the slope angle gets too steep, the materials will start to slide down the slope. This critical slope angle, also called the angle of repose, is different for different… Read more

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