2 or more atoms joined by chemical bonds

the energy of motion

the amount of mass in a given amount of space

A substance that consists of just one type of particle and is the same throughout is called a ​

a change in matter that produces one or more new substances

the kinetic energy of the particles in a substance

a solid sometimes forced when two liquids are combined

a characteristic or attribute of an element

a substance in which the particles are packed together and dont move much; rigid, fixed shape, fixed volume and cannot be squashed

substance in which the particles are close together and in contact but move past each other; not rigid, no fixed shape, fixed volume,

substance in which particles are far apart and dont stay in contact with each other; not rigid, no fixed shape, no fixed volume

element that is a good conductor of heat and electricity

element that is a poor conductor of heat and electricity

element that has some metallic and some nonmetallic properties

mixture made of substances so evenly mixed that it is difficult or impossible to see the individual substances

mixture made of parts that are easily identifiable and can be separated

substance that contains only one type of atom and cannot be broken down into a simpler form

shininess

a chart that organizes all known elements according to patterns in their properties

ability to be easily hammered and shaped

a special group of metals that is more difficult and expensive to extract

a push or pull

an applied force that is perpendicular to the object

a force exerted when objects are touching each other

a force exerted at a distance

a contact force that two surfaces exert on each other when they push or rub against each other

a non-contact force that pull objects with mass towards each other

the attractive or repulsive force exerted by magnetic materials

strength or degree

two forces acting on the same object that are equal in strength and opposite in direction

two forces acting on the same object that are not equal in strength and opposite in direction

the combination of all the forces acting on an object

an action force and its corresponding reaction force, as described by Newton's 3rd law

a law that states if one object exerts a force on another object, then the second object exerts an equal but opposite force on the first objects (equal and opposite reaction)

a law that states if one object exerts a force on another object, then the second object exerts an equal but opposite force on the first objects (equal and opposite reaction)

ability to do work or cause change

energy due to the position of an object or its shape

energy in motion

energy an object has due to its position relative to Earth's surface

energy a material stores due to a change in shape

energy stored in the bonds of atoms and molecules

the distortion of a shape

a disturbance that transfers energy from one place to another

the material through which a wave travels

a wave in which particles move in the same direction of energy transfer

a wave in which particles move perpendicular to the direction of energy transfer

energy cannot be created or destroyed but can be transferred or transformed from one form to another

the sum of an object's energy in motion (kinetic) and its stored energy (potential)

a complete change in the form or appearance of something

move something from one place to another

imaginary line that passes from Earth's north pole

a period of the year with certain patterns of weather and day lengths

a day of the year when the noon sun reaches its highest or lowest point in the sky

movement of one object around another object

a day when neither hemisphere of Earth is tilted toward or away from the sun, and day and night are the same length

a tide with the least difference between consecutive high and low tides

a tide with the biggest difference between high and low tide

the predictable rise and fall of ocean water that occurs along Earth's coastline

all the living things on earth

All Earth's water, including liquid, vapor and ice forms

the layer of gases that surrounds Earth

all the rocks and minerals that make up Earth

Earth's outermost layer of solid rock, including both dry land and ocean floor

a layer of hot, solid rock directly below the crust

a layer of molten, or liquid metal found directly below Earth's mantle

a dense sphere of solid metal found in the center of Earth

a molten mixture of rock-forming substances, gasses and water from the mantle

parts or elements that make up something

series of processes in which rocks change and are formed from one another

rock that forms when magma or lava cools and hardens

rock formed when small particles of rocks or the remains of plants and animals are pressed and cemented together over time

rock made from different types of rock and formed from great heat or pressure, usually deep underground

water and human waste washed down sinks, showers, and toilets

pollutants released into the air

mixture of smoke and fog

chemical pollution in the air mixed with falling water

single source of air pollution

widespread sources of air pollution

the careful use of a resource to prevent it from being wasted and make it last longer

a poisonous gas made of 3 oxygen atoms

the way we apply science to daily life to meet our needs or solve problems

a way to make technology work better, with less waste of materials and time

the breaking down and carrying away of particles of rock

matter that came from living things

particles of rock and clay that settle at the bottom of rivers and oceans

the removal from the soil of important nutrients that plants need

the process of turning land with healthy soil into land with little soil that lacks nutrients

the removal of trees from an area

ill health that results from not getting enough to eat or not getting the proper nutrient rick foods

the measure of how the production of food or other resources on land can be repeated from year to year

the process of restoring an area of land to a more productive state

fuels such as oil, natural gas, and coal that were formed millions of years ago from plant and animal remains

a condition where people lack access to enough energy to meet their basic needs such as lighting and the ability to cook food or heat their homes

all the living things in a particular area, along with the nonliving parts of the environment they interact with

each individual living thing

the environment that provides an organism with the things it needs to live, grow, and reproduce

all the organisms of one species living in the same area

a group of similar organisms that can produce offspring and whose offspring can also mate and reproduce

all the populations that live in an ecosystem together

living or once living parts of an organism's habitat

nonliving parts of an organism's habitat

any required factor that restricts, or holds back the growth of a population

the struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time

an organism that kills another for food or nutrients

an organism that is killed or hunted by another

a relationship in which two organisms live together and at least one benefits

a symbiotic relationship between members of two species in which both benefit

a symbiotic relationship in which one species benefits and the other species is neither helped nor harmed

a symbiotic relationship in which one organism lives with, on, or in another and harms it

features that make organisms different from one another

any difference among individuals of the same population that is passed on from the previous generation

difference in the way organisms in the same population act

difference in the body structures of organisms in the same population

a well-supported explanation that the cell is the fundamental structural unit of living matter

the basic unit of structure and function in all living things

made up of only one cell

made up of more than one cell

an individual living thing

a tool that allows you to see enlarged images of tiny images

made up of one cell that lacks a nucleus and membrane bound cell parts

having a nucleus and membrane bound cell parts inside each cell

makes its own food

cannot make its own food and obtains nutrition and energy by consuming other organisms