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Science Exam2012
studying
| Question | Answer |
|---|---|
| oxygen gas, orange juice, and a hammer are examples of ______ because each has mass and volume | matter |
| green plants transform ______ energy from the sun into chemical energy | radiant |
| two objects that have the same ____ will have the same weight when they exeprience the gravitational force of the same planet | mass |
| in the equation for photosynthesis, 6 molecules of carbon dioxide & 6 molecules of water produce ____ molucule(s) of glucose & 6 molecules of oxygen. | 1 |
| plants make their own food using energy that come from ______ _______. | the sun |
| Almost all living things depend on the process of _______ to supply them with the energy they need. | photosynthesis |
| some plants produce acids that result in _________ weathering | chemical |
| bacteria and fungi in soil are called _______ because they break down dead plants & animals releaseing nutrients into the soil while releasing heat. | decomposers |
| water & wind can ____ soil, or carry it away | erode |
| two factors that determine the rate of weathering are the type of rock and the _____ | climate |
| the part of an ecosystem where an organism lives & feeds is called the organism's _____ | habitat |
| all the biotic and abiotic factors in an area together make up a(n) ______ | ecosystem |
| two abiotic factors that are needed for photosynthesis are sunlight and _____ | water |
| a lack of places of build nests is an example of ____ as a limiting factor for a population of birds | space |
| heterotrophs that obtain food and energy by eating other organisms are called _____ | consumer |
| mold & some bacteria are _______ that obtain energy by breaking down wastes and remains of dead organisms | decomposers |
| catastrophic events such as hurricanes, which produce large waves and higher-than-normal tides, can speed up _____ of land along coasts | erosion |
| freshwater found in soil & rock layers below earth's surface is called _____ ______ | ground water |
| water vapor must condense into water droplets before ____ can form | precipitation |
| the ______ _____ is the continuous process by which water moves through the nonliving parts of the environment | water cycle |
| the plants and algae that grow thru out a pond produce _____ needed by animals in a pond | oxygen |
| millions of people obtain their water from the Ogallala _____, a huge store of groundwater under the plains of the Midwest | aquifer |
| the ______ in a wetland ecosystem capture the energy of sunlight throught photosynthesis and store it as chemical energy in food | Producers |
| the atmosphere keeps earth from being hit by most _____ which are chunks of rock from space | meteoroids |
| on a mountaintop a person runs out of breath quickly because fewer _____ molecules are present per cubic meter of air | oxygen |
| the sun's energy comes from the process of _____ _____ in which hydrogen atoms form helium | nuclear fusion |
| a rocket burns fuel to produce gases, which creat a ___ that moves the rocket when expelled. (newton's 3rd law) | force |
| multistage _____ make it possible to travel into space | rockets |
| in space, ____ _____ supply the oxygen astronaunts need to breathe | space suit |
| the energy role of a grizzly bear is that of a(n) _______ because it cannot make its own food | consumer |
| an organism that eats only plants is a ____ consumer | primary |
| a mouse in a food web is a first-level consumer when it eats grass, and a ____ _____ consumer when it eats an insect | 2nd level |
| the least amount of energy is available at the _____ level of an energy pyramid | highest |
| ___ species such as lichens are the 1st to grow in an area with no soil | pioneer |
| the type of succession that occurs in an area where an ecosystem previously existed is called _____ succession | secondary |
| most of an animal's ____ consists of actions that help it survive or reproduce | behavior |
| ____ behavior is based on experience which makes it differeent than instinctive behavior | learned |
| many species of animals engage in courtship behavior, which ensures that males and femailes of the same ___ recognize one another | species |
| the factor that probably accounts for the great biodiversity in coral reefs is their diversity of ____ | niches |
| ecosystem tourism or ecotourism is an example of the ____ value of biodiversity | economic |
| suppose you are standing on a corner when a car moving toward the N passes u. If u use the car as a reference point, the direction in which u appear to be moving is toward the ___ | south |
| the statement that the motion of a hurrican is 20 km/hr in an easterly direction is a description of the hurricane's _____ | velocity |
| when u hold a pencil & write ur hand exerts a ____ on the pencil | force |
| if a person is traveling in a car that stops suddenly the person keeps moving forward because of ____ | interia |
| one ____ is the force required to accelerate 1 kg of mass at 1 meter per second per second | newton |
| as the distance between 2 objects decreases the gravitational force between them ____ | increases |
| work = ___ x ____ | force x distance |
| list lab equipment most useful for growing bacteria samples | petuidish microscope |
| matter is recycled in a compost bin due to ___ organisms | decaying |
| ______ are a piece of lab equipment which is helpful for protecting against spilled liquids and broken glass | goggles |
| list at least 2 pieces of lab equipment that should be available when working around an open flame | fire extinguisher & fire blanket |
| when removing a keystone species such as a plant from an ecosystem many of the other species will _____ in number | decrease |
| when a mover helps move a couch upstairs, we know that ____ is being done because the couch is moved a distance | work |
| if an astronaut studies a plant in space the astronaut is most likely studying the effects of ___ on the plant | gravity |
| when lava flows down a mountain into the local reef system it will __ most of the reef animals | kill |
| fire may spread ___ in a grassland biome due to the respective lack of water in comparison to a tropical rain forest | quickly |
| if a drought hits TX deer are most likely to ___ to find more food & water | move |
| sealing concrete for the winter in cold climates is wise because of a type of ____ weathering called ice wedging | mechanical |
| TX is losing biodiversity because the native bobwhite quail are most threatened due to a loss of ___ | habitats |
| the walls of the grand canyon were formed by water ___ | erosion |
| a drought would negatively affect carnivores because there would be a(n) ___ in the # herbivores | decrease |
| when water ___ in the air it falls a s rain in a process called precipitation | condenses |
| an ____ is an underground layer of rock that holds water | aquifer |
| groundwater fills the cracks & space in underground soil & rock layers. watersheds pick up ___ from human activity causing groundwater to become more dangerous to drink | pollution |
| due to earth's rotation, refolution, and titl, earth's surface cannot maintain a ___ temperature | constant |
| size, distance & no asteroid belt are all ___ to most solar system models | limitations |
| u will have a greater biodiversity of ___ if there is more flora & other abiotic factors such as water & rocks | fauna |
| many desert animals have _____ helping them be more active at night because of their bome's extreeme temperatures | adaptations |
| an ecosystems increase in biodiversity leads to a more ___ environment helping it reach its climax community | stable |
| equilibrium is not present if an environment begins either ___ or ____ succession | primary or secondary |
| beaches r formed by ___ when waves drop of the sediment & beach rocks r broken down from physical weathering due to waves | deposition |
| the hypothesis that Mars may once have had the conditions needed to support life is based in part on evidence that ____ ____ was once present | liquid water |
| microgravity affects an astronaut's bone health by ___ the amount of physical stress on bones, resulting in bone deterioration | decreasing |
| when a non-native animal is introduced into an ecosystem at climax, it can form new natural enemies with existing organisms that did not have any natural ___ | enemies |
| the primary limiting factor of a ___ biome is its lack of water, less than 25 cm per year. | desert |
| living cells contain sugar that they use for fuel. this sugar contains ___ energy | chemical |
| if a kestrel eats a mouse that eats grass, the kestrel is a(n) ___ consumer | secondary |
| 2nd-level consumers may be either carnivores or ____ | omnivores |
| in an energy pyramide, the available energy ___ at each feeding level compared to the level below | decreasing |
| which land biome is extremely cold & dry | tundra |
| a canopy, an understory, and an extremely high # of plat & animal species r characteristics of which biome | tropical rainforest |
| ponds & rivers are 2 types of ___ biomes | freshwater |
| the series of changes that occures after a disturbance in an existing ecosystem is called _____ ____ | secondary succession |
| plants growing on a new island formed by the eruption of an undersea volcano r an example of ___ ____ | primary succession |
| the first time a bird builds a nest, the bird builds the nest perfectly. this kind of behavior is an example of an ____ behavior | inherited |
| protection against ___ is a benefit of living in a group | predators |
| a species that influesnces the survival of many other species is called a(n) ____ species | keystone |
| if u know the distance of an object has traveled in a certain amount of time, u can determine the ___ of the object | speed |
| speed equalss distance divided by ___ | time |
| if a bicyclist travels 30 km in 2 hours, her avg speed is ___ | 15 |
| on a graph showing distance vs time, a ___ line represents an object that is not moving at all | horizontal |
| when a force changes an object's motion, the force is ___ | unbalanced |
| changing direction is a kind of ____ | acceleration |
| the force of gravity on a person or object at the surface of a plet is known as ____ | weight |
| as long as the forces acting on a system r exactly balanced, the system is said to be at ___ | equilibrium |
| plant stems tend 2 grow upward & the roots tend to grow downward because of the response 2 gravity know as ____ | geotropism |
Created by:
Sassy1000