Ninth Grade Science Experiments (Page 58)

Improving Focus for People with Neurodevelopmental Disorders

Science Fair Project Idea

Scientific Method

Have you ever wondered how you could help yourself or your classmates focus or perform better in class? Many students do! Some kids diagnosed with a neurodevelopmental disorder learn better in different ways, and easy changes while performing a task can make a huge difference to them. In this science project, you'll test if standing can significantly improve your performance and if this further improves performance for those who have neurodevelopmental disorders. Read more

Ion Thruster: Build an Ion Wind Rotor

Science Fair Project Idea

Scientific Method

Ion thrusters, also called ion engines (Figure 1), are a type of electrically-powered spacecraft propulsion. While they provide very low thrusts (and thus low accelerations), they can do so for very long periods of time using a very small amount of fuel. So, while not appropriate for escaping Earth's gravity like chemical rockets which are less efficient but generate higher thrusts, they are useful for deep-space probes or making small adjustments to satellite orbits. You can read more about… Read more

Is Plant-Based Milk as Protein-Packed as Dairy Milk?

Science Fair Project Idea

Scientific Method

What kind of milk do you drink in your household? Do you drink 2% dairy milk, whole dairy milk, or plant-based milk like almond milk or soy milk? Have you ever considered why you drink it? As more sustainable and alternative food options become increasingly available, people are interested in the nutritional value of plant-based foods. The US government dietary guidelines state that dairy milk is a good source of protein. Are plant-based milk sources also a good source of protein? In this… Read more

LED Stickies

STEM Activity

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24 reviews

Add some light to your refrigerator magnets and learn about circuits in this fun craft project! Read more

Make a Hygrometer to Measure Humidity

STEM Activity

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29 reviews

Does your hair go frizzy during "April showers," when the weather turns damp? Strands of hair can relax and lengthen when the humidity (or the amount of water vapor in the air) increases, and then contract again when the humidity decreases. In fact, the rate of change in the length of hair strands is so dependable that they can actually be used as the basis for a hygrometer, a device that measures the humidity level in the air. Read more

Make a Magnetic Slime Robot

Science Fair Project Idea

Engineering Design Process

Could you use a magnetic slime "robot" to retrieve a battery accidentally swallowed by a small child? Scientists think so! Watch this video to learn about magnetic slime that, when driven by external magnetic fields, can squeeze through small spaces and even grasp objects. Can you make your own magnetic slime robot that can accomplish some of the same tasks demonstrated by the researchers? You can start by adding iron filings to slime to make your own magnetic slime (see this Science Buddies… 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 a Night-Light

STEM Activity

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26 reviews

Are you ready to move beyond paper circuits and squishy circuits? This is a great intermediate circuit project where you will build your own working night-light. And of course, you will have some fun decorating it! Read more

Make a Pomodoro Study Clock

Science Fair Project Idea

Engineering Design Process

The Pomodoro technique is a popular study method consisting of alternating study sessions and breaks. In this engineering project you will build your own customized Pomodoro timer or clock using an Arduino. In addition to displaying the time, you can use your clock to display messages or get the user's attention using lights, sound, or even moving parts. Can you work more efficiently with a Pomodoro timer at your side? Build one and find out! 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

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