the amount of space an oject takes up

a tool used to measure mass

a tool used to measure volume

a tool used to measure force

to take the place by removing or pushing aside

a type of metal containing iron, nickel, steel or cobalt that has a magnetic field

a tool used to separate solids and liquids and different size solids from one another

a tool used to make small things look bigger

an educated guess about the outcome of an investigation that can be tested

a factor in an experiment that does not change

factors in an experimental investigation that are controlled, changed, observed or measured

the variable being measured or observed in an investigation

the variable changed by a scientist in an investigation

a repeat of a test or an observation

pieces of information

the ability of an investigation to be reliable and accurate

proof

an explanation based on your observations or measurements

group together based on similar traits

the condition in which matter exists (solid, liquid or gas)

specific characteristics of a substance or object can be observed or measured

floating or sinking when compared to water

water in a gas stater

when water (liquid) is heated and changes into water vapor (gas)

when vapor (gas) is cooled and changes into water (liquid)

a combination of two or more substances

a type of mixture in which one substance dissolves in another

a single part of a mixture

a material's ability to be dissolved

a change in physical properties, such as size or shape

to break up into such small pieces, it seems to disappear

what is needed to do work or cause change

energy produced by a machine or a moving part

energy produced by the movement of electrons

energy that travels in a straight line and illuminates, lights up, objects that we see

energy that causes a transfer of heat or temperature between materials

energy produced by vibrations that you can hear

negatively charged subatomic particles

flow of electrons from negatively charged objects to positively charged objects

material that allows electric current or heat energy to flow through easily

material that slows down or stops electric current or heat energy from flowing through easily

a circuit that allows the flow of electrons

a broken circuit in which electrons cannot flow

a circuit in which all components are connected in a single pathway

a circuit that has more than one pathway for the electrons to travel

a device that shuts off power to an electrical circuit when there is too much current

light energy that bounces off objects

the bending of light rays as they move through different mediums

a curved piece of glace or plastic that refracts (bends) light

a solid, liquid, or gas material

to soak up

to allow (light, hear, sound, etc.) to pass through

a band of of colors produced when light goes through a prism

a push or a pull

a force that slows or stops a motion when objects rub together

the force that pulls objects together

the tendency of an object to resist a change in motion

the standard international unit used to measure force

the breaking down of larger rock into smaller pieces called sediment

a type of weathering that occurs when water trapped in cracks and pores of rocks repeatedly freezes and melts

the movement of sediment from one place to another by wind, water, or ice

the dropping of sediment in a new location by wind, water, or ice

small pieces of weathered rock

a type of rock formed from layers of sediment that is compacted and cemented over time

the process of rocks forming when minerals get into the spaces between sediments and cause them to stick together and harden

the process of rocks forming when sediments are squeezed together under the weight and pressure of layers above

a recognizable, naturally formed feature on the Earth's surface

a v-shaped valley eroded by a river or stream

a large mass of ice that slowly moves down mountains and valleys

a landform made when sediment is deposited at the mouth of a river as it flows into an ocean, sea, etc.

a resource that can be replaced within a lifetime

a resource that once it is all used up cannot be replaced within a lifetime

a source of energy that started forming millions of years ago from the remains of ancient plants and mircoorganisms

the breaking down of plant and animal remains by decomposers

a solid fossil fuel that forms from ancient plants over millions of years

a gaseous fossil fuel that forms from ancient microorganisms over millions of years

a liquid fossil fuel that forms from ancient microorganisms over millions of years

a name given to crude oil and refined oil

the practice of using resources wisely

a long-term (30+ years) pattern of weather

the day-to-day conditions in the atmosphere in a certain location

a short-term (hours, days) prediction of future weather

the amount of water vapor in the air

an invisible layer of gases that surrounds Earth and a few other planets and moons

the continuous movement of water on, above and through the Earth

any form of water that falls from the clouds

water that does not get absorbed into the ground and moves across the land into streams and rivers

the collection of water into lakes and oceans, or as clouds

water from precipitation that soaks into the ground and is stored in the pores of soil and rock

evaporation of water from plants

the outermost region of the sun's atmosphere

an eruption on the sun's surface

a cool spot on the sun's surface that occurs for a short time

a whole in the ground formed by impact

a body (natural or human-made) in space that orbits a planet

an imaginary line that passes through Earth's center at is North and South poles

one complete spin on an axis, which equals one day

the 24-hour period light and dark experienced by Earth as it rotates

optical illusion when objects appear as if they are moving due to our own motion

to move around another object

sequential phases of the moon as seen from Earth in a four week period due to the moon's position in relation to the Earth and Sun

relationships between living things and non-living things for survival

a living thing

all the living and non-living things that interact in an area

a gas exhaled by animals and taken in by plants

the process by which plants make their own food

all the living and non-living things in an area

an organism that makes its own food

an organism that must eat other organisms to obtain energy

an organism breaks down dead and decaying material

a model used to show a single path energy takes as it moves through an ecosystem

a model used to show multiple paths energy takes as it moves through an ecosystem

plant eater. an organism that consumers only plants for energy

plant and meat eater. an organism that consumes both plants and animals for energy

meat eater. an organism that consumes only other animals for energy

to have a direct effect or change on

an organism introduced into an ecosystem that is not native, has no natural predators, and causes harm

to die

harmful materials or substances in the environment

the pollution size an environment can feed and support

a lack of resources to meet basic needs

remains or traces of organisms that lived long ago

a trace or track an animal leaves behind

the slow break down of dead plants and animals over time

a special structure or functions that allows an organism to thrive in their environment

to blend in with the environment

an inactive period for some mammals during the winter season

a seasonal movement from one place to another by certain species of birds, fish, and mammals

when one organism resembles another organism to fool predators

a physical feature passed from parent to offspring

a physical feature obtained after birth that is not passed from parent to offspring

an innate (natural) behavior in an organism that is not taught

an action learned through practice or observation

the result of reproduction by two parent organisms