sending signals
The central nervous system is made up of the brain and this body part.
What is the spine?
Located at the back of the brain, this region coordinates physical balance and encodes muscle memory for activities like riding a bike.
What is the cerebellum?
According to the law of Consevation of energy this is what energy can never be.
What is created or destroyed?
(use g = 9.8 m/s2)
What is 29.4 J?
This device was invented by Alexander Graham Bell
What is the telephone?
When bare feet step into an icy mountain stream, these specialized receptors detect the extreme cold and alert the CNS.
What are thermoreceptors?
This process eliminates underused synaptic connections during adolescence, reducing grey matter volume to increase overall processing efficiency.
What is synaptic pruning?
The word used to describe energy that is no longer useable.
What is dissipated?
A lightbulb takes in 200 J of electrical energy each minute and produces 50J of light and 150 J of heat energy. This is its efficiency.
A 2026 study published in Animal Behaviour revealed that these mammals don't just solve complex physical puzzles for food—they often solve them just for the fun of learning!
What are racoons?
This nerve carries the signals responsible for your sense of smell.
What is the olfactory nerve?
During teenage development, this emotional, threat-evaluating structure matures earlier than the prefrontal cortex, often driving heightened reactivity and risk-taking.
What is the amygdala?
When something is stretched, it gains this type of energy.
What is elastic? (elastic potential)
A 0.50 kg basketball is held above the ground and possesses 24.5 J of gravitational potential energy.
This is the height at which the basketball is held.
(Use g = 9.8 m/s2)
5 m
After noticing how burrs from burdock plants stuck to his dog's fur during a hike in 1941, Swiss engineer George de Mestral invented this popular hook-and-loop fabric fastener.
What is velcro?
These specialized neurons serve as the bridge connecting sensory and motor pathways in a reflex arc.
What are interneurons?
Glial cells create this fatty insulating sheath around axons to dramatically boost signal transmission speeds, fully wrapping the prefrontal cortex by around age 25.
What is myelin? (will also accept myelination)
The part of its swing at which a pendulum has the greatest kinetic energy.
What is the bottom?
Calculate the speed of a 1200 kg car that has a kinetic energy of 150 000 J.
What is 15.81 m/s?
In 1928, Alexander Fleming accidentally discovered this first effective antibiotic growing on a contaminated Petri dish of bacteria.
What is penicillin?
Stepping into a bright sunny room triggers oculomotor nerves to contract the pupils and squint the eyes to protect this light-sensitive tissue at the back of the eye.
What is the retina?
Composed of the midbrain, pons, and medulla oblongata, this structure continuously regulates automatic survival functions like breathing rate and heartbeat.
What is the brainstem?
The unit used to measure electrical energy in our homes.
What is the kWh? (kilowatthour)
A skateboarder rolls up a ramp starting at the bottom with a velocity of 7.0 m/s. Assuming no energy is lost to friction or air resistance, this is the maximum vertical height the skateboarder reaches above the ramp base. (Use g = 9.8 m/s2)
What is 2.5 m?
In 2012, physicists at CERN's Large Hadron Collider confirmed the discovery of this subatomic particle, often called the "God Particle," which gives mass to other fundamental particles.
What is the Higgs Boson?