Tenth Grade Science Experiments (Page 197)

Pluck Out & Pick New String Materials for Your Guitar

Science Fair Project Idea

Scientific Method

Walk into any music store and you'll find a dizzying array of string choices for your classical guitar, including rectified nylon, clear nylon, carbon fluoride, bronze wound, phosphor bronze wound, silver-plated copper wire, Polytetra-flouro-ethylene (PTFE), each in a range of tensions from low to high. There is no single best brand or best material. All have their advantages and disadvantages. A set of strings that sounds "sparkling" on one guitar might sound dull on another, primarily because… Read more

Polymer Permeability: Which Plastic Wrap Prevents Evaporation Best?

Science Fair Project Idea

Scientific Method

There are three different kinds of polymers used for kitchen plastic wrap: low density polyethylene (LDPE) (e.g., Handiwrap or Glad Wrap), polyvinyl chloride (PVC) (e.g., Reynolds PVC Foodservice Wrap or Boardwalk PVC Food Wrap Film) and polyvinylidene chloride (PVdC) (note: Saran Wrap used to be made with polyvinylidene chloride, but has switched to polyethylene. You will need to search for another brand that uses PVdC if you want to test it). Which of these materials is least permeable to… Read more

Polymer Permeability: Which Plastic Wrap Prevents Oxidation Best?

Science Fair Project Idea

Scientific Method

There are currently two different kinds of polymers used for kitchen plastic wrap: low density polyethylene (LDPE) (e.g. Saran or Glad Wrap) and polyvinyl chloride (PVC) (e.g. Reynolds PVC Foodservice Wrap or Boardwalk PVC Food Wrap Film). Which of these materials is less permeable to oxygen? When you slice an apple, the surface of the slice turns brown as the apple is oxidized. Can plastic wrap seal out oxygen and prevent the apple from browning? Which plastic wrap works best? Do… Read more

Popcorn Popping Science

Blog Post

In this family STEM activity, students experiment to find out the science secrets behind popcorn. What Makes Popcorn Pop? Have you ever wondered what makes popcorn pop? Not all varieties of corn pop. Popcorn has a specific structure and a specific composition that allows us to turn the hard kernels into a tasty snack. In this week's family science activity, families head to the kitchen for a firsthand look at popcorn popping science. Part of what makes popcorn pop is the water that is… Read more

Popsicle Trusses

Blog Post

Does the shape beams make when they come together make a difference in their strength? Beams in civil engineering have an important role to play in ensuring a building or bridge stands up, supports the weight it should, and doesn't bend or collapse under normal use. In this week's family science project, students and families use popsicle sticks and binder clips to investigate the relationship between the shape of trusses in a building and their strength. Popsicle Stick Trusses:… Read more

Porosity

Science Fair Project Idea

Scientific Method

Soils are made of particles of different types and sizes. The space between particles is called pore space. Pore space determines the amount of water that a given volume of soil can hold. Porosity is the percentage of the total volume of soil that consists of pore space. Compare the porosity of different types of soil. Which types of soil hold the most water? Can you see this under a microscope? Read more

Potato Science Collection

Blog Post

Whether you prefer your potatoes mashed, fried, or as part of an alternate energy circuit, you can use these vegetables for a range of hands-on student science explorations! Potato Projects If potatoes are on the menu this month, set a few aside for hands-on science—or turn your food preparation into a science experiment! From kitchen science to electronics, there are many science questions kids can explore using potatoes! For potato-based… Read more

Power Play: How Does Animation Timing Affect Your Perception of Game Action?

Science Fair Project Idea

Scientific Method

"Pow!" Wow, what an awesome punch that character has! Ever wondered what goes into making a punch look good in a video game? Or any other character motion sequence, for that matter? Try this science fair project for a firsthand look at how art and timing can create memorable game action. Read more

Powering a Raft with Surface Tension: Weekly Science Activity

Blog Post

In this week's spotlight: a physics family science experiment that investigates the dynamics of surface tension. Surface tension may keep your soda from spilling over the cup when you fill it a bit too full, but can surface tension also be used to propel something? In this science activity, students build a small, lightweight raft and experiment to see how surface tension—and some dish soap—can help move it across the surface of water. Build a Bathtub Toy Raft Powered by… Read more

Practice

Science Fair Project Idea

Scientific Method

We've all heard that "practice makes perfect," but what is the best way to practice? For example, does "mental practice" do any good? You'll need at least 9 volunteers for this project. Pick a well-defined sports activity, with a measurable outcome, such as shooting basketball free-throws (measure number of shots taken and number of shots made), or balancing on one foot on a slightly raised beam (measure how long you can do it; if it's too easy, try closing your eyes). Test all volunteers… Read more

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