reading
What do all three discoveries described in the text have in common?
What do all three discoveries described in the text have in common?
Antibiotic is a substance used to
fight infections
The flakes were popular because
they tasted good and were easy to eat
When Alexander Fleming was studying a _______, he accidentally discovered penicillin.
culture
What initially made Alexander Fleming think his experiment was ruined?
What initially made Alexander Fleming think his experiment was ruined?
Mold is
a soft fungus that grows on damp things
Georges de Mestral invented Velcro after
hiking and finding burrs on his clothes
The scientist realized that the _______ growing on the dish killed bacteria.
mold
What crucial observation led to Fleming’s discovery of penicillin?
The bacteria near the mold were dead.
A culture in a lab is
bacteria grown under controlled conditions
Velcro’s name comes from
velvet + crochet
The cooks forgot the _______ overnight, and by morning it had become _______.
dough / stale
What were John and Will Kellogg’s original intentions when creating corn flakes?
To prepare healthy vegetarian meals for mental hospital patients
Stale bread is
dry and not fresh
NASA used Velcro because
it kept things secure in space
Velcro works because one side can _______ to almost any surface.
cling
How did the Kelloggs accidentally create flakes?
They left boiled wheat overnight and rolled it out, forming flakes
Mental hospital refers to
an institution for mental-health patients
What do these discoveries show about scientific work?
Accidents can lead to important inventions.
While hiking, Georges de Mestral noticed tiny _______ stuck to his clothes.
burrs