PASS Vocab Science
A cold-blooded animal with a backbone and smooth. wet skin. It usually grows into an adult in water, and then spends part of its life on land.
The study of stars, planets, and outer space.
The air that surrounds a planet.
A set of bones that runs down the middle of the back; also called the spine.
An animal that eats moslty other animals.
A path through which an electric current can flow.
The usual weather in a place.
Having a body temperature that changes based on the temperature of the environment.
The process by which a gas turns into a liquid.
To allow energy, such as electricity or heat, to pass through.
A tree that forms seeds inside cones.
A group of plants and animals, along with their environment. The members of an ecosystem depend on one another.
Electricity flowing through a circuit. When you turn on a light, an electric current flows to the light bulb and lights it up.
A temporary magnet formed when electricity flows through a coil of wire.
At risk of becoming extinct because t here are few left. Certain types of whales and bears are endangered.
A supply or source of power. Plants use energy from the sun to make food.
The natural world, where people, animals, and plants live.
The process by which a liquid turns into a gas.
No longer existing. Dinosaurs used to roam the earth, but now they are extinct.
The order in which one living thing eats another. In the food chain, worms and insects eat plants. Then birds eat the worms and the insects.
The push or pull on an object caused by another object.
The part of a plant that forms around a seed.
A very large group of stars and planets. We live in the Milky Way galaxy.
A prediction, or guess, about how an experiment will turn out.
Behavior that is natural, not learned. A mother bear's instinct is to protect her cubs.
A piece of metal that attracts iron steel towards it.
A warm-blooded animal with a backbone and hair or fur on its skin. The female gives birth to live young and produces milk to feed her babies.
A large piece of rock from outer space that burns up as it travels through Earth's atmosphere.
A tool that makes very small things look bigger, so that they can be viewed and studied.
To move from one place to another. During the winter, many birds migrate to warmer places.
The shapes of the moon, as it is seen from Earth throughout each month. The new moon, half moon, and full moon are moon phases.
A small, fuzzy green plant that grows on damp soil, rocks, or tree trunks. Mosses do not have roots or flowers. They have spores instead of seeds.
To travel around the sun or a planet. The Earth orbits the sun. The moon orbits the Earth.
A living thing. All plants and animals are organisms.
A large heavenly body that orbits, or travels around, the sun.
Water that falls from clouds in the form of rain, sleet, snow, or hail.
An animal that hunts other animals for food.
An animal that is hunted by other animals.
To throw back light or sound.
To bend or change the direction of light or sound.
A cold-blooded animal with a backbone and scales that cover its body. Reptiles creep along the ground or crawl on short legs.
To move on a path around a point. The moon revolves around the earth.
A heavenly body that orbits, or travels around, a planet. An object that orbits the Earth. The moon is a satellite of Earth.
The part of a plant from which a new plant can grow.
A tool that makes things that are far away seem closer and larger.
The measure of how hot or cold something is.
A tool that measures temperature.
A huge wave caused by an underwater earthquake.
Having a body temperature that stays the same regardless of the outside temperature. Mammals and birds are warm-blooded animals.
The path that water follows, from evaporation, to condensation, to precipitation.
Water that is in the form of a gas. When water evaporates, it turns into water vapor.
A physical change, or change in behavior, that helps tan organism live in its environment.
An invertebrate with a hard outer skeleton, three or more pairs of legs that bend, and a body made up of segments. Spiders, centipedes, and lobsters are arthropods.
The ability of an animals to hide itself by blending into its surroundings.
A switch that automatically cuts off the electric current in a circuit when the current gets too high.
A white, feathery cloud made up of tiny ice crystals.
An area in which a cold mass moves toward a warm air mass. The cold air pushes up the warm air.
The transfer of heat or electricity from one substance to another.
A substance that allows energy, such as heat or electricity, to pass through it.
A puffy white cloud that looks like cotton.
A point through which an electric current can flow in and out.
A plant that has spores instead of seeds, and does not have flowers.
Electricity produced by moving water.
A substance that does not allow energy, such as heat or electricity, to pass through it.
An animal that does not have a backbone, or spine. Jellyfish, butterflies, and crabs are invertebrates.
A scientist who studies weather.
Something found in nature that is useful to people, such as wood, water, or oil.
A dark, gray rain cloud.
A circuit that has more than one path along which an electric current can travel.
A solid figure that seperates light into the spectrum, or rainbow, of colors.
An instrument used to measure how much precipitation has fallen.
The bouncing of light waves off of a surface, or the image that appears in a mirror or other reflecting surface.
To spin around a fixed point.
A circuit that has only one path along which an electric current can travel.
The smallest category into which organisms are classified, or grouped. Members of a species have the same traits and can reproduce more of their own kind.
A plant cell produced by non-flowering plants, such as ferns or mosses, that can grow into a new plant.
An electric charge that stays on an object.
A gray or white cloud that forms in layers and spreads across the sky.
Letting some light through.
Letting light through so that objects on either side can be seen clearly.
The range of light waves that people can see.
An instrument that tells the direction in which the wind is blowing.
Light that is a mixture of all the colors of the rainbow, even though it looks colorless. Sunlight is an example of white light.
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