Gears date back many centuries and are extremely useful since they can change the direction imposed by a source of power, as well as torque and speed. This lesson describes an experimental study of the relationship between gear ratio and angular velocity by using PocketLab Voyager and Wonder Gears. Wonder Gears is listed for ages 3+, with this lesson heavily emphasizing the “+” part of the description—since this lesson is perfect for junior high students aged 12 through 14. This is one of the many advantages of Po
On a hot, sunny day, would you rather wear dark or light-colored clothes? Have you ever walked across dark pavement barefoot on a hot day? How did that feel? Would you rather walk on the dark pavement or a lighter colored sidewalk along green grass? In this experiment you will investigate how the color of objects can affect it’s temperature.
Objective: The objective of today’s lab is to determine if water or sand heats up more quickly and “keeps” its heat longer. You will then use your collected data to answer the following question: How does a hot, sunny day at the beach affect a fish in the water differently from a crab on the sand? Explain.
The law of conservation of energy states that the total energy of an isolated system remains the same. Over time, all energy is conserved. Energy is neither created nor destroyed – instead it transfers from one form to another. Objects in motion have kinetic energy. Thermal energy is energy in a system due to its temperature.
Engage your students in engineering practices and classic force and motion and energy concepts in a fun and unique way. With a PocketLab attached to a Hot Wheels car and a track full of magnets, you'll be able to collect data on position, velocity, acceleration, and energy as your car zips up an over hills and around loops. Turn your students into theme park engineers and have them design "roller coaster" tracks, iterate on car designs for races, or teach basic concepts on position and velocity. This activity is sure to help engage your students in a meaningful way.
Almost everyone enjoys watching the figure skating events in the Winter Olympic Games! But only a select few worldwide with the required skills and God given talent have the opportunity to compete. What about the rest of us? We can’t even imagine how the Olympians manage to perform all of those fancy quad jumps and camel, layback, upright, and sit spins. But we can sit in a chair, and with the right chair, we too can do a sit spin of sorts! Add PocketLab and we can also learn some physics about conservation of angular momentum.
Have you ever wondered what your dog does all day long while you are at work? Is resting the major “activity” or is there some occasional wandering? Is there silence or periodic barking, such as when the mailman comes or a squirrel is seen through a window? The author of this lesson has a couple of schnauzers, known for their predisposition for barking. “Welcome to the Bark Side” is a frequent phrase voiced to passersby while I am taking the schnauzers for a walk. But how much do they bark when cooped up in the house and I am out someplace? And do they move around a lot or mostly nap
People of all ages have enjoyed playing with toy race cars for many decades. Anki OVERDRIVE is currently one of the most popular and technologically advanced race car sets available in the marketplace. Why not attach Voyager to an Anki supercar and give your students a fun way to study angular velocity?! Each student group can design there own racetrack and obtain a Voyager snapshot of angular velocity vs.
Late in 2017 a handful of companies began selling LED flame lamps that do a great job of simulating an actual burning fire. The illumination is bright, has a color temperature of a warm orange flame, and the light produces negligible heat while running at under 5 watts of electric power. This light seems to be a great replacement for traditional gas lanterns, hurricane lamps, and oil lamps. The simulated flame is unbelievably realistic in the flame light purchased by the author. No obvious pattern could be detected in the flickering LED flame by observing the light with the eye.
The eye is one of the many marvels of the human body. The colored iris of the eye, surrounding the pupil, acts as a diaphragm to keep the amount of light entering the eye fairly constant. If you walk out the door of your house to a sunny yard, the iris opening gets smaller letting less light into your eye. If you enter a dark room after watching your favorite television program, the iris gets larger to allow more light to enter your eye. This is a protective reflex, as too much light could damage the retina, which is where the image forms in the eye, similar to the film of a traditional