Defying Gravity

Since February, the 8th graders have been diving into physics in science class, exploring the forces of gravity, air resistance, and friction. Through a series of engaging, hands-on labs, they’ve been putting their knowledge to the test—seeing firsthand how these forces interact and impact objects on our planet.

The students started exploring gravity and air resistance by creating different-sized parachutes and dropping them from the ceiling of the science lab. Students could see the pull of gravity on the parachutes and how air resistance could be used to slow that force down by measuring the time each took to descend. Next, students worked on designing, creating, and launching rockets to see how to defy air resistance and gravity.

Last week, the class worked with projectiles that used both vertical and horizontal motion. Different paper airplane designs created more air resistance than others. The students saw how these forces act on objects and how various features of an object can affect these forces.

This week, students took their physics learning to the next level with an exciting experience to iFly in Union City where they explored terminal velocity in a real wind tunnel! They discussed how mass, air resistance, and surface area affect falling objects, then put theory into practice by suiting up and experiencing it firsthand. Students got to “fly” in the wind tunnel, feeling the exact force needed to keep them floating or falling at terminal velocity—a thrilling, hands-on lesson in action!

Students then made guesses at which toys thrown in the wind tunnel would fall the fastest or slowest based on size, mass and surface area! A lot was learned and experienced. 

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Mission to Mars

The Hoot Owls have continued their adventure into space. One planet the students were very excited to learn more about was Mars, and especially the rovers on Mars! After watching a Mars Rover video, the students were inspired to create their own rover. After gathering useful items from around their classroom, the Hoot Owls used a huge box to create a rover. Next, the class brainstormed ways to supply the Rover with energy to move around: solar panels and batteries were the winning ideas. The class worked as a team, with some friends making solar panels while other friends made batteries to attach to the rover.

The Hoot Owls welcomed guest expert Jordan to teach them more about rovers and answer their questions. Jordan worked with the people who constructed the head for NASA’s Mars Perseverance rover. He shared that Perseverance’s head is about the size of a shoe box, and contains its eyes (cameras) and a bigger eye that is a laser, which is used to examine rocks. The students were intrigued to learn that scientists tell the rover where to go to find a special rock, then they zap the rock, which causes dust to puff up, which allows scientists to examine the dust and determine what the rocks is made of. 

Thank you, Jordan, for sharing your knowledge and experience with the Hoot Owls!

#SaklanGuestExpert