Ninth Grade Projects, Lessons, Activities (Page 20)

Identify Road Signs with Machine Learning

Science Fair Project Idea

Engineering Design Process

Driverless cars use machine learning, a type of artificial intelligence, to identify road signs and other things they encounter on the road, like pedestrians and other vehicles. In this project you will take your own pictures of different types of road signs and use machine learning to identify the signs using a free online tool (no programming is required). You will then attempt to improve your machine learning model so it can identify signs in a variety of environments. Read more

Make a Model Rocket Land Vertically

Science Fair Project Idea

Engineering Design Process

Companies like SpaceX and Blue Origin are dramatically lowering the cost of space flight by designing reusable rocket boosters that land back on Earth. Getting a rocket to land vertically without any damage - and without using a parachute to slow it down - is quite a tricky physics problem! In this project you will modify your own model rocket so it can land vertically. Read more

Make an Automatic Evaporative Cooling System

Science Fair Project Idea

Engineering Design Process

You probably know that sweat helps cool your skin on a hot day because of evaporation. But do you think you can use evaporation to cool a building? Evaporative cooling systems could provide a more environmentally-friendly alternative to traditional air conditioning. In this engineering project you will build and try to optimize your own model evaporative cooling system. Read more

Measuring Magnetic Fields

Science Fair Project Idea

Scientific Method

Have you ever noticed how magnets appear to have no effect on each other when they are far apart? Then, when you slowly move them closer together, you will start to feel a gentle pull until they suddenly snap together? How exactly does the strength of a magnet change with distance, and how would you measure it if you wanted to find out? In this project you will build a circuit that can measure the strength of a magnetic field and see how the field strength changes with distance. Read more

Model the Distances between Planets in our Solar System

STEM Activity

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Did you know that the Voyager 2 spacecraft took 12 years to travel from Earth to Neptune, the furthest planet in the solar system? This sounds like a really long time! Maybe not that long if you consider what distance the spacecraft had to travel to get from Earth to Neptune. In this activity, you will make a model of the planets in the solar system and specifically model their distances to scale. Will it explain why the Voyager 2 took so long? Try it and see! Read more

Paw Preference in Pets

Science Fair Project Idea

Scientific Method

The great majority of people have a distinct hand preference. How about animals like dogs or cats? Do they show a paw preference? If you like animals, this science fair project might be for you. Read more

Reaction Rates: When Surface Area Matters!

Lesson Plan Grade: 9th-12th

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How does surface area affect the speed of a chemical reaction? Let your students find out in this sizzling lesson plan! In this project, they will explore this correlation by crushing Alka-Seltzer® tablets into different sized particles and measuring how long it takes for them to dissolve in water. Read more

NGSS Performance Expectations:

HS-PS1-5. Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.

Watching Nuclear Particles: See Background Radiation Zoom Through A Cloud Chamber

Science Fair Project Idea

Scientific Method

Do you realize that you are constantly bombarded by particles? You do not feel them, you cannot see, hear, or smell them, but they are always there! These particles — collectively called background radiation — might even travel through you without ever interacting with the molecules in your body. In this science project, you will build your own cloud chamber to prove the existence of background radiation. You will then use your cloud chamber to determine if the background… Read more

What Do Different Baking Ingredients Do?

Science Fair Project Idea

Scientific Method

If you like to bake, this might be an interesting project for you. When you're following a recipe, do you ever wonder why certain ingredients keep showing up time after time (e.g., baking powder in quick breads)? Do you notice that certain ingredients tend to occur in a particular ratio to one another (e.g., amount of shortening and sugar, or amount of shortening and flour, or number of eggs and amount of flour)? What happens if you use more or less of an ingredient than the recipe calls… Read more

Where There Is Charge, There Can Be Sparks!

Science Fair Project Idea

Scientific Method

Have you ever gotten a shock touching a doorknob after walking across a carpet? Static charge is responsible for that shock. Wouldn't it be cool to save up and store all of that charge in a homemade jar? It would almost be like storing lightning. This science project will show you how to do that. Read more

Ninth Grade Projects, Lessons, Activities (792 results)

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