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Science Final
from quiz
| Term | Definition |
|---|---|
| Matter | A physical substance made of atoms that has mass and takes up space |
| Atom | The basic building block of all matter |
| Molecule | A group of atoms bonded together |
| Phase Change | A change from one state to another without a change in chemical composition |
| Chemical reaction | When two or more different substances are mixed, a new substance with different properties may be formed |
| Property | A characteristic of a substance that can be observed or measured |
| Evaporation | A change of state from a liquid to a gas |
| Condensation | A change of state from a gas to a liquid |
| Solubility | The ability to dissolve into another substance |
| Flammability | A measure of how easily matter will burn |
| Conductivity | The ability of a substance to conduct heat or electric current |
| Forces | A push or pull that one object exerts on another |
| Gravity | The force exerted by Earth that pulls objects near the surface to the center of the planet |
| Energy | The ability to cause change or do work |
| Energy Transfer | The movement of energy from one object to another |
| Energy Production | The conversion of stored energy into a desired form |
| Photosynthesis | The process which plants use sunlight, water, and carbon dioxide to create their own food |
| Consumer | An animal that gets energy by eating plants or other animals for food |
| Decomposer | An organism that breaks down dead plants and animals |
| Ecosystem | A community of living and non-living things that work together |
| Interdependence | Organisms interact and rely on each other in nature for survival |
| Invasive species | Any newly introduced species that can damage food chains, change the environment, carry disease or prey on native species |
| Universe | A collection of all things that exist in space |
| Stars | Giant balls of exploding gas |
| Galaxy | Stars grouped together in space in a huge collection |
| Earth's Axis | An imaginary line that passes through the North and South poles of the planet |
| Earth's Orbit | The elliptical path that the Earth takes around the sun once every year |
| Constellation | A group of stars that form a pattern in the sky |
| Moon | Earth's only natural satellite |
| Geosphere | Includes the only non-living soil, rocks and minerals that make up the land on Earth |
| Biosphere | Includes the living plants and animals in the many biomes on Earth |
| Hydrosphere | Includes all the water on Earth including rivers, lakes, oceans and glaciers |
| Atmosphere | Includes all of the gases on the planet |
| Climate | The range of an area's typical weather conditions and the extent to which those conditions vary over many years |
| Engineering | The application of science in the process of design |
| Failure Point | A flaw in the design or use of a system that has the potential to stop the system from successfully solving the problem |
| Fair test | A test of quality used to identify failure points in a design and identify the areas of the design that need improvement |
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