What is the name for the colored part of the eye that controls how much light enters?
100
true
TRUE or FALSE: The signals that travel from neuron to neuron move in only ONE direction along the length of the axon.
100
Salt
What dissolved substance in our bodies helps conduct neurons’ signals?
(Hint: We lose this when we sweat!)
100
gallbladder
What organ of a buffalo did Plains Indians use to make yellow paint?
100
Penguin
What animal travels at 25 mph under water but finds it easier to toboggan on its belly on land?
200
Pupil
What is the hole in the center of the eye where light passes through?
200
Cells that make up the nervous system.
What are neurons?
200
Reaction time
What is the term for the time it takes your body to respond to a signal sent from the brain through the neurons?
200
Nagasaki
What was the first city to be leveled by a plutonium-based atomic bomb?
200
White blood cells or leukocytes
What do leukemia sufferers have too many of?
300
Optic nerve
What is the name for the part of the eye that carries messages from the eye to the brain?
300
Nucleus
What part of the neuron determines whether a signal is passed along to the next cell?
300
Circulatory System
What body system takes this oxygen from the lungs to our cells?
300
submarine
What type of vessel was powered by a hand-cranked propeller when first used in combat in 1176?
300
LASER
What's short for "light amplification by stimulated emission of radiation"?
400
Rods
These allow you to see MOTION: a. Rods, b. Cones
400
It is the part of the neuron connects to the next cell's dendrites.
How can you identify the axon?
400
Blood takes it there—blood is our transport system, it drops off oxygen at the cells and picks up carbon dioxide to take it back to the lungs so it can be exhaled out of the body.
How does this Carbon Dioxide get from our cells to the lungs?
400
kangaroo
What creature proved to be much faster than a horse in a 1927 race in Sydney, Australia?
400
Venus
What planet is the brightest object in the sky, after the sun and moon?
500
Cones
These allow you to see COLORS: a. Rods, b. Cones
500
TRUE
The nervous system only receives signals.
a. TRUE b. FALSE
500
Our body’s cells produce it as a waste product.
Where does the Carbon Dioxide that we exhale come from?
500
Honey
What sticky sweetener was traditionally used as an antiseptic ointment for cuts and burns?
500
Pluto
What's believed by many to be a satellite of Neptune that escaped its primary orbit?