KB General Science #3 Flashcards
What is a term given to a species whose numbers are so small that the species is at risk of extinction?
endangered
What does the prefix “thermo” mean?
heat
What do we call a visual phenomenon that results in a false or deceptive visual impression?
optical illusion
What is the name given to the graphic representation of the amount of energy in each level of an ecosystem?
energy pyramid
What is the largest mammal on Earth?
blue whale
What common kitchen substance lowers the freezing point of water?
salt
Who developed the first functional telescope?
Galileo
What type of plant sugar is the basic fuel and basic building material for much of life?
glucose
The scientist Galileo experimented with gravity by dropping balls from what Italian landmark?
the Leaning Tower of Pisa
What is the major producer in an ocean food chain?
algae (phytoplankton is an algae)
Finish Newton’s 3rd Law of Motion: For every action there is an __________.
equal and opposite reaction
What color of the spectrum has the longest wavelength?
red
What is the shape of the Milky Way galaxy?
spiral
What do we call the hormone that maintains a human’s blood sugar level?
insulin
What is another word for the human trachea?
windpipe
What scientist proposed the theory of an expanding universe?
Edwin Hubble
Before the continents drifted apart, they formed one land mass known as what?
Pangaea
What is the term given to the giant pieces of the earth’s crust that form our continents?
plates
What term means “the traces or outlines of plants or animals that lived millions of years ago”?
fossil
What is the name of the scientific dating method that can be used to determine the age of something that lived 50,000 years ago?
Carbon 14
