harmful rain caused by pollution

harmful rain caused by the burning of all fuels

harmful rain caused by the burning of fossil fuels

a large region of air that has a similar temperature and humidity

a small region of air that has a similar temperature and humidity

a large region of air that has different temperature and humidity

a small region of air that different temperature and humidity

an always harmful rapid increase in the amount of algae found in water

a rapid increase of the amount of algae found in water

a slow increase of the amount of algae found in water

a sometimes harmful rapid increase in the amount of algae found in water

when a star or other objects in the sky are moving

when a star or other object in the sky seems to move even though it is Earth that is moving

when objects in the sky are moving

when a star or other object in the sky seems to move even though the Earth isn't moving

the gases on Earth

the land that makes up the Earth

the water on Earth

the gases that surround Earth

an organism with no cells

an abiotic factor in an ecosystem

a type of single cell organism

a type of multi-cell organism

the part of Earth in which living things exist and interact

the part of Earth in which non-living things exist

the part of Earth that is made up of water

the gases that surround the Earth

a nonliving thing in an ecosystem, such as a pond, the air, or the dirt

a living thing in an ecosystem, such as a plant, an animal, or a bacterium

a change that produces new matter with different properties from the original matter

a change that effects old matter with different properties from the original matter

a change that produces new matter

a characteristic that cannot be observed when the type of matter changes

a characteristic that can only be observed when the type of matter changes

a characteristic that can only be observed when the type of matter does not change

the constant weather pattern of a region over time

it has nothing to do with the weather

the average weather pattern of a region over time

the only weather pattern of a region over time

a type of mixture in which the particles of one material are scattered through another without settling out

a type of mixture in which the particles of one material are not scattered through another without settling out

the process through which a liquid changes into a gas

the process through which a liquid turns into a solid

the process in which a solid turns into a liquid

the process through which a gas changes into a liquid

ability for energy, such as electricity and heat, to move through a material

when energy, such as electricity and heat, cannot move through a material

the act of using resources

the act of saving, protecting, or using resources wisely

a physical law that states that matter is created and destroyed during a physical or chemical change

a physical law that states that matter is neither created nor destroyed during a physical or chemical change

a physical law that states that matter is created but not destroyed during a physical or chemical change

a physical law that states that matter is not created but can be destroyed during a physical or chemical change

any of the patterns of stars that can be seen in the night sky from here on Earth

patterns in the night sky that can't be seen from Earth

planets in the sky that can be seen from Earth

an organism that can make its own food

an organism that cannot eat

an animal that eats other animals

an organism that cannot make its own food

an organism that breaks down dead animal material

an organism that breaks down dead plant and animal material

an organism that doesn't break down dead plant and animal material

an organism that breaks down dead plant material

the addition of trees in a large area

has nothing to do with trees

the removal of pine trees from a forest

the removal of trees from a large area

the dropping off of eroded soil and bits of rock

the addition of eroded soil and bits of rock

the dropping off of bits of rock

the dropping off of bits of eroded soil

when a species is in danger of becoming extinct

when a species is extinct

when there are a lot of a species on Eart

when you want to change something

a cool wave that makes a light turn on

the ability to do work or change something

the inability to so work or change something

the consistency of energy from one organism to another in a food chain or food web

the waves that go between the light switch and the light blub

the movement of energy from one organism to another in a food chain or food web

the process of weathered rock moving from one place to another

the process of normal rock moving from one place to another

the process of weathered rock settling into its new home

the process of normal rock settling into its new home

a process through which a liquid changes into a gas

a process through which a gas changes into a liquid

the process through which a liquid changes into a solid

the process through which a solid turns into a liquid

when there is only one of that species left

when a species has died out completely

when there are just a few members of that species left

when there is an abundant amount of that species

land way from a body of water that is unlikely to flood

land near a body of water that is unlikely to flood

land near a body of water that is likely to flood

land away from a body of water that is likely to flood

the path that energy and nutrients do not follow among unliving things in an ecosystem

the path that energy and nutrients follow among living things in an ecosystem

the path that energy and nutrients follow among unliving things in an ecosystem

the path that energy and nutrients do not follow among living things in an ecosystem

the overlapping food chains on Earth

the overlapping food chains in an ecosystem

a spider web

organisms that get energy from other organisms that may be living or dead

organisms that don't get energy from other organisms

plant-like organisms that get energy from other living organisms

plant-like organisms that get energy from other organisms which may be living or dead

a collection of billions of stars, dust and gas that is not held together by gravity

a collection of planets

a collection of billions of stars, dust and gas that is held together by gravity

a state of matter that does not have its own shape or definite volume

what you put in your car

what happens to some people when they eat beans

the layers of solid and molten rock, dirt, and soil on Earth

the bodies of water on Earth

the gases that surround the Earth

ice that never melts

a large sheet of ice that moves slowly across the land

a big rock that floats in the ocean

a big hunk of ice that the titanic hit

the force of attraction between any two objects due to their mass

the force of attraction between any two objects due to them being on Earth

the force that causes objects to repel away from one another

water stored in the cracks and spaces between particles of soil and underground rocks

water stored below rivers and lakes

water stored in the cracks and spaces between rocks and moutains

a place where plants live

a place where humans live

a place where plants and animals live

a place where animals live

an area where molten rock from within the core reaches Earth's surface

an area where molten rock from within the mantle rises close to Earth's surface

an area where molten rock from within the core rises close to Earth's surface

an area where molten rock from within the mantle reaches Earth's surface

Earth's water, whether found on land or in oceans, including freshwater found underground and in glaciers, lakes, and rivers

Earth's water found in the oceans

the gases that surround the Earth

all of the land found on Earth

a covering of ice over a large area such as in the polar regions

a covering of water over a large area such as in the polar regions

a covering of ice over a large area

a covering of water over a large area

an organism that is introduced to a new ecosystem and causes harm

an organism that kills an ecosystem

when you slide down a hill on a wagon or other device

the sudden movement of snow down a hill

the sudden movement of rocks and soil down a slope

like a mud slide

the distance light travels over several years

the distance sound travels in a year

the distance light travels in a year

buzz lightyear

a state of matter that has a definite volume but no definite shape

a state of matter that has a definite volume and a definite shape

the ability of a material to repel from a magnet without needing to be a magnet themselves

the ability of a material to be attracted to a magnet without needing to be a magnet themselves

the amount of material in several objects

the weight of objects

the amount of material in an object

anything that has mass and takes up space

any object that takes up space

all things made of atoms

a chunk of rock from space that travels through Earth's atmosphere

a chunk of rock that travels through space

a chunk of rock that has hit Earth's atmosphere

a chunk of rock from space that travels through Earth's atmosphere

a rock that travels through space

a meteor that strikes Earth's surface

liquid, living substances found in nature

solid, nonliving substances found in nature

solid, living substances found in nature

liquid, nonliving substances found in nature

a physical combination of two or more substances that are blended together without forming new substances

a chemical combination of two or more substances that are blended together without forming new substances

a physical combination of two or more substances that are blended together to form new substances

a chemical combination of two or more substances that are blended together to form new substances

cold melted rock found in Earth's mantle

cold melted rock found in Earth's core

very hot melted rock found in Earth's core

very hot melted rock found in Earth's mantle

the apparent shapes of the Moon in the sky

the different positions of the moon in the sky

the continuous circulation of nitrogen from air to soil to organisms and back to air or soil

the non-continuous circulation of nitrogen from air to soil to organisms and back to air and soil

the path an object takes as it travels around a planet

the path an object takes as it travels around another object

the an object takes as it travels through space

the continuous exchange of carbon dioxide and oxygen among living things

the non-continuous exchange of carbon dioxide and oxygen among living things

the continuous exchange of carbon dioxide and oxygen among non-living things

the non-continuous exchange of carbon dioxide and oxygen among non-living things

the leaves through which food moves

the tissue through which food from the leaves moves throughout the rest of a plant

the stem through which food from the leaves moves throughout the rest of a plant

the tissue through which food from the stem moves throughout the rest of a plant

a change of matter in only shape that doesn't change the type of matter

a change of matter in size, shape, or state that does change the type of matter

a change of matter in size, shape, or state that does not change the type of matter

a change of matter in only size that doesn't change the type of matter

a large, round object in space that orbits a star

Earth

a large, square object that orbits a star

a large, round object that floats in space

changes in weather

water that falls from clouds to the ground in the form of rain

water that falls from the sky to the ground in the form of rain, sleet, hail, or snow

water that falls from clouds to the ground in the form of rain, sleet, hail, or snow

an animal that hunts other animals for food

an animal that gets hunted

an animal that hunts other animals for food

animals that are eaten by other animals

an organism that uses energy from the Sun to make its own food

an organism that doesn't use energy from the Sun to make its own food

an organism that makes its own food

an organism that doesn't make its own food

when you see yourself in your car

what happens when you look in the mirror

the way light bounces off an object

the way light doesn't bounce off an object

an artificial lake built for storage of water

a dam

a container where you keep extra water

one complete trip around a star in a circular or nearly circular path

one incomplete trip around an object

one complete trip around an object in a circular or nearly circular path

when the Earth spins in a circle

an incomplete spin on an axis

a complete spin on an axis

a complete spin around a star

an incomplete spin around a star

excess water that flows over Earth's surface from a storm or flood

how you create a mudslide on a river bank

excess water that flows down a river bank after a storm or flood

a state of matter that does not have a definite shape or volume

a state of matter that has does not have a definite shape but does have a definite volume

a state of matter that does have definite shape but not a definite volume

a state of matter that has a definite shape and volume

the minimum amount of a substance that can be dissolved by another substance

the maximum amount of a substance that can be dissolved by another substance

a mixture of substances that are blended

a mixture of substances that are blended so completely that the mixture looks the same everywhere

a mixture of substances that are unblended

a mixture of substances that are blended but the mixture still looks different in some places

a ball of gas that hovers in the air

an object in space that produces its own energy, including heat and light

a light that floats around in space

pores in the bottom of leaves that open and close to let in air or give off water vapor

the leaves on a plant

the plants stem that carries food and oxygen to the flower

the center of a plant where the seeds and pollen are produced

closets, sheds, cabinets, etc

the process of water being stored on Earth's surface in the ground or as a water feature

the process of water being stored in Earth's reservoirs

where you parents put things

the irregular rise and fall of the water level along a shore line

the water level along a shore line

laundry soap

the regular rise and fall of the water level along a shoreline

the release of water vapor through the stomata of a plant

the release of oxygen through the stomata of a plant

the release of carbon dioxide through the stomata of a plant

the release of water from the stomata of a plant

Tafiti

a closed part of Earth's surface where melted rock or gases are forced out

an opening in Earth's surface where melted rock or gases are forced out

a mountain on Earth's surface that explodes

a measure of how big around an object is

a measure of how much space an object takes up

a measure of how much an object weighs

a measure of how much space is inside an object

the continuous movement of water between Earth's surface and the air, changing from gas into liquid into gas

the continuous movement of water between Earth's surface and the air, changing from liquid into gas into liquid

KY3

the condition of the atmosphere at a given place and time

the conditions on Earth at a given place and time

rain, snow, sleet, etc

the plant tissue through which water and minerals move up from the roots

the plant tissue through which water and minerals move up from the stem

the plant tissue through which water and minerals move up from the leaves

the plant tissue through which water and minerals move down

Climate

Weather

Forecast

Albedo

Ecology

Environment

poison

Atoms

Chemical Reaction

Physical Reaction

Molecules