FINAL EXAM: review packet #3 Flashcards
(32 cards)
a hypothesis is a
prediction of what you think’ll happen (if then statement)
matter is anything that
has mass and takes up space
A physical property is a
property of matter that does not have to do with a chemical change (ex. color, hardness, boiling point, density, volume, mass, etc.)
A chemical property is a
property of matter that can lead to a chemical change (ex. flammability, toxcitiy, acidity, reactivity)
what’s the difference between a physical change and a chemical change?
PHYSICAL CHANGE=can be changed back to what it was before (water melting/freezing, painting something a new color
CHEMICAL CHANGE=when a substance cannot be changed back to its original form (lighting paper on fire, something rusting)
what would you use to measure water
graduated cylinder
LAW OF CONSERVATION OF MASS IS
matter can never be created or destroyed <3
solids have a/n
defenite shape and volume
liquids have a/n
indefinete shape and definete volume
gases have a/n
indefiente shape and indefendante volume
viscosity is
a liquids resistance to flow / how thick or thin a liquid is
high viscosity liquid
honey (flows slower)
low viscosity liquid
water (flows quicker)
what animals make thier own food
producers/autotrophs like plants, trees, and flowers
how do animals who dont make their own food get energy and what are they called
consumers/heterotrophs like squirrels, humans, mice, etc.
explain a predator/prety relationship
predators hunt and eat prey. prey gets hunted and eaten by the predators
a lion is an example of a predator and a rhino is an example of prey
abiotic stuff
rocks, soil, air
biotic stuff
fungus, plants, animals
what happens to the energy at each level of an energy pyramid
as you move from the bottom to the top of the pyramid less and less energy is transferred. 10% of the energy goes from one level to the next.
PRODUCERS HAVE 100%, as you go from one level to the next 10% of the energy at the level before it (not 10% of the producers original energy) is transferred
mutualism
both animals benefit (ex. birds living in alligators mouths and cleaning their teeth, bird gets protection and alligator gets teeth cleaned)
commensalism
one animal benefits and the other is unharmed (ex. schools of fish holding onto a shark to go places, fish get rides and shark just vibes)
parasitism
one animal benefits but the other (usually the host) is harmed (ex. tapeworm eating an organisms insides, it gets nutrients but the animal gets sick)`
what is ecological succesion
the gradual growth of an environment over time
order of stuff that comes in ecological succesion
lichens/bacteria, then moss, then grass, the small bushes and plants, small tress, lots of large trees to make a full forest :)
