Science fair projects provide 7th graders an excellent way to explore science concepts. By planning carefully, students can craft experiments that will awe judges at either their school fair or national competitions.
Learn all about cell membranes with this interactive bubble experiment, while teaching nitrogen with one that compares pea plants with and without nitrogen-fixing bacteria.
Pinball Machine
Investigate how different forces affect the motion of a pinball machine by building one from cardboard. Utilizing ice lolly sticks as “flippers” provides an easy and cost-effective way to gain insight into controlling marbles with the appropriate force.
Modern pinball machines typically consist of a dot-matrix display board and sound system. Examine their interactions to see how smoothly the game operates.
Helicopter
Helicopters are gravity-defying machines designed to generate lift, or an upward force that counteracts the downward pull of air, in order to escape gravity’s grip. This lift is achieved using rotating wings known as rotor blades on top of the helicopter.
Helicopter pilots use levers known as cyclic and collective controls to adjust how much force their rotor blades exert against airflow when spinning, so as to control how much force is applied by rotating air.
Electric Generator
This straightforward demonstration shows how spinning magnets can generate electricity to power a light bulb, opening up discussions on electromagnetic generators such as commutators, direct current dynamos and alternators.
For this project, you’ll need a cardboard strip, large nail and several magnets. Additionally, plastic box may help protect magnets and wires. To spin them using either hand drill or electric drill is optional.
Cellular Mitosis Models
Cellular mitosis is essential to the continued survival and expansion of multicellular organisms, as it ensures that each daughter cell receives its full set of DNA.
Students use onion root tip slides to observe cells going through mitosis and meiosis. Students can categorize these cells according to canonical mitotic stages such as prophase, prometaphase, metaphase, anaphase and telophase; furthermore they can explore a cellular mitosis model.
Automatic Pet Feeder
Many pet owners rely on automatic feeders to dispense meals at scheduled times when they’re away, yet these devices can still pose danger if accidentally knocked over.
Establishing a schedule can help cats and dogs maintain healthy weight levels, lowering the risk of obesity-related diseases. With this programmable feeder’s easy operation and sleek design, this goal can easily be accomplished.
Wave Machine
This large and noisy machine employs a foil to generate waves on either side of a central pier. Adjustments made to its velocity and foil enable customizing wave size, steepness and frequency settings.
This model provides an ideal way of illustrating how transverse traveling waves move across a substrate surface, as well as showing how pulses reflect and transmit at the interface between fast and slow media.
Taxonomy Models
Establish your taxonomy using hierarchical relationships among terms. This involves defining parent-child or related-term relationships.
Explore chemistry through this engaging bubble experiment designed to teach about cell membranes or try this hands-on wave machine and see how different liquids react to vibrations.
Make sure your learning content aligns with Bloom’s Taxonomy and other established frameworks, and engage stakeholders, subject-matter experts, and content strategists as part of this effort to meet their goals.
Bubble Experiment
Enter the delightful world of soapy delight with this captivating bubble science experiment! This engaging activity helps students learn about how bubbles form and the different ingredients can alter their behavior.
Add glycerin to your bubble solution for thicker and longer-lasting bubbles, using pipe cleaners or bendable wire to craft bubble wands of different shapes and sizes, then ask students if their new wands produce identical types of bubbles as their old ones.
Static Electricity Experiment
Electrons make up everything we see, including ourselves. When these tiny particles collide against one another – such as between balloons and your hair – static electricity is produced.
Learners will enjoy watching as tissue paper cat shapes ‘pounce’ onto a balloon due to static charge accumulation, providing an engaging demonstration of Bohr’s model of the atom at human scale.
Water Density Experiment
Discover density with this engaging experiment by stacking glasses of different colored water. It shows why less dense objects float atop more dense ones.
Students should use a graduated cylinder to measure the volume and mass of each sample of water they collect, then compare these figures. They should explain that density of liquid is calculated as its mass divided by its volume.