Yes or No?
Do mosquitoes zero in on a combination of carbon dioxide and body odorants?
Yes, they do!
This creature has the ability to run upside down across ceilings while hunting insects.
What is a gecko?
This CDA staff member was interrogated in high school by the FBI.
Who is Mr. Johnston/Pastor Brandon?
What is unusual about how the ball joint fits into the hip socket in humans?
It is located off-center from the bone.
Name the strongest material in our bodies.
What is tooth enamel?
Were animals living in the distant past primitive and simple?
No! Fossil studies show that they were definitely not primitive and simple.
What human body fluid helps cuts in the mouth to heal faster than other external wounds?
What is saliva?
This CDA staff member finished in the top ten in a state spelling contest when they were 14 years old.
Who is Mr. Davidson?
How are vessels near a wound sealed off?
What is through a clotting mechanism? (Also acceptable: fibrin)
What do scientists hope DNA can help with in the future?
What is computer memory?
Do multiple arm muscles and lubricated joints permit controlled rotation and flexing for our arms?
Yes, they do!
Which profession uses colored masks or screens that are more transparent that is based on the design of penguins' external eye fluid?
What are welders? (Also acceptable: welding)
This CDA staff member was once offered 10 camels for their hand in marriage. (They did not accept.)
Who is Mrs. Zylstra?
What have scientists found when they have modeled the horse bone and then applied pressure, even under extreme stress?
That the opening is not the source of breakage or failure.
What may someday be commonplace for secure identification purposes?
What is iris scanning?
Were the first non-skid deck shoes that Sperry manufactured called the Sperry Top-Sliders?
No, they were called the Sperry Top-Siders.
What is the full Latin name of the paste-like covering that coats the skin of an infant before birth?
What is vernix caseosa?
This CDA staff member has been through the Panama Canal three times.
Who is Mr. Davidson?
How do giraffes keep from fainting when raising and lowering their heads several feet? These two features prevent blood from pooling in the long legs or head of the giraffe, name one.
A series of circulation valves in the neck prevents major blood pressure changes in the giraffe’s head. Also, the giraffe’s legs have especially tight skin and strong muscles.
Scientists are studying the internal chemical signals that trigger the annual regeneration of what?
What are antlers?
Do the elliptical swirls of a fingerprint allow helpful vibrations to stimulate our nerves, only if the fingers move one direction across an object?
No! The elliptical swirls in our fingerprints allow us to feel helpful vibrations no matter which way the finger moves across an object.
What are the 2 features that frogs have that help them to hang on the underside of leaves, whether the leaves are wet, dry, smooth or rough?
What are cleats and mucus?
This CDA staff member has volunteered at an orphanage in Mozambique and a school in Honduras.
Who is Mrs. Lee?
There are three stages of how the ear processes sound as noted by Bell. Describe two.
First, the bones of the inner ear amplified the slight vibrations of the eardrum. Second, the signal then passed into the liquid-filled cochlea, or inner ear. Third, the electrical signals are directed onward to the brain.
A catalyst material is embedded in the outer coating of the polymer surface. The inner region contains a network of small channels filled with a liquid chemical resin. Then a crack or fracture reaches the underlying channels, the liquid resin oozes outward and meets the catalyst, and hardening takes place. This is an example of how what two things can heal themselves? (Name both!)
What are aircraft components and medical implants?