Ninth Grade Science Projects (Page 26)

Golf Clubs, Loft Angle, and Distance: The Science of Hitting

Science Fair Project Idea

Scientific Method

Use a video camera to analyze the angle of lift with different clubs. Measure the distance the ball travels. Be sure to conduct a sufficient number of trials with each club so that your results are consistent. This can also be a great way to work on your swing! (Idea from Goodstein, 1999, 83-85.) Read more

Grow Plants in Microgravity with an Arduino Clinostat

Science Fair Project Idea

Scientific Method

Can humans grow food in space? Can we grow plants on the Moon or on a space station? This is an important question to answer as humans look to expand our existence to the Moon, Mars, and beyond. In this science project you will build a clinostat, a device that can simulate microgravity right here on Earth and use it to explore the effects of microgravity on plant growth. Read more

Grow Vegan Kombucha Leather

Science Fair Project Idea

Scientific Method

Do you love the look and feel of leather? Many luxury items like handbags, belts, wallets, and coats are made from leather. What if you could make your own vegan leather in a few weeks? Could it be a greener, more sustainable option than cowhide leather? In this science project, you will grow your own vegan leather from kombucha and see how different growing conditions affect the resulting leather. Read more

Growing Great Gardens: Using Human Urine as a Fertilizer

Science Fair Project Idea

Scientific Method

Every day farmers around the world apply commercial fertilizer to their fruits and vegetables to improve plant health and yield. But applying commercial fertilizer is expensive and not economically possible for some farmers in developing countries. What if they could find a way to fertilize plants cheaply? It turns out that human urine is rich in the nutrients that plants need to grow. Could urine serve as a fertilizer substitute? Find out for yourself in this plant growth science project. Read more

Growth and Age

Science Fair Project Idea

Scientific Method

One thing that all living things have in common is that they grow through cell division. How is this growth regulated? Sometimes growth occurs when it is not supposed to, leading to cancer. Scientists are trying to discover how growth is regulated, hoping to find potential cures for cancer. One idea is that cells keep track of growth using special regions of the chromosome called "telomeres" that count how many divisions a cell has made. If this is true, then growth, cell division and age are… Read more

Guitar Fundamentals: Wavelength, Frequency, & Speed

Science Fair Project Idea

Scientific Method

This is a rockin' project for guitarists with an interest in the physics behind the music. Have you ever wondered why the pitch of the note changes when you fret the string? You can find out for yourself with this project on the fundamental physics of stringed instruments. Read more

HAMing It Up with the Astronauts

Science Fair Project Idea

Scientific Method

Have you ever wished you could talk to an astronaut on board the International Space Station? You're probably thinking "yeah, like NASA would ever let you do that!" Actually, they will! The International Space Station (ISS) is equipped with its own HAM radio station. The ISS HAM radio station allows astronauts, cosmonauts, and space mission specialists from different nations who are on board the space station to talk to people back home on Earth. Anyone with an amateur radio license is… Read more

Harmful Algal Blooms in the Chesapeake Bay

Science Fair Project Idea

Scientific Method

Harmful algal blooms occur when algae, which form the base of the ocean food web, grow in massive numbers and produce toxic or harmful effects on people, fish, shellfish, marine mammals, and birds. In this project you will learn how to use archived data from continuous monitoring stations on the Chesapeake Bay to study how water quality measurements (dissolved oxygen (DO), salinity, temperature, pH, turbidity, and total chlorophyll) change before, during, and after harmful algal blooms. Read more

Harmful or Helpful? The Effects of Hydrogen Peroxide on the Roots of Plant Cuttings & on Seed Germination

Science Fair Project Idea

Scientific Method

Hydrogen peroxide (often used as a disinfectant) has also been approved for use in pesticides. This science fair project investigates whether hydrogen peroxide has any effects on seed germination or on roots of plant cuttings. Read more

He Huffed, and He Puffed, But Didn't Blow the House Down! How Can Straw Make a Sturdy Building?

Science Fair Project Idea

Scientific Method

In the fairy tale of the three little pigs, the wolf huffed and puffed and blew down the first pig's straw house. But in reality, straw, tied into bales, is a viable building material that, when used properly, makes sturdy and energy-efficient buildings. Straw is a renewable resource that is available all over the world since it is the byproduct of growing grain. In this science fair project, you will test a straw bale covered with stucco to see if it's water resistant, and evaluate if it's… Read more

Ninth Grade Science Projects (633 results)

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