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5th Vocab Review
| Term | Definition |
|---|---|
| Force | a push or pull |
| Friction | a force that opposes motion |
| gravity | a force of attraction between two objects |
| balanced forces | forces on an object that are equal in size and opposition in direction |
| unbalanced forces | forces that cause a change in motion |
| position | the location of an object in relation to a nearby object or place |
| motion | a change in position |
| speed | how the position of an object changes during a certain amount of time |
| velocity | the speed of an object in a particular direction |
| food chain | the transfer of energy from one organism to the next in an ecological community |
| food web | a diagram that shows how food chains overlap |
| energy pyramid | a diagram that shows how much energy passes from one organism to another up a food chain. |
| Photosynthesis | the process by which plants and plant-like organisms make food |
| chlorophyll | a green molecule |
| producers | organisms that make their own food |
| consumers | organisms that cannot make their own food |
| adaptation | a characteristic that helps a living thing survive |
| instinct | behaviors that animals know how to do without being taught |
| environoment | all the living and nonliving things that surround and affect an organisms. |
| ecosystem | all the organisms living in a place together with their environment |
| population | a group of organisms of the same species in the same ecosystem |
| community | the populations that live and interact in an area |
| habitat | the place where an organism lives within an ecosystem |
| niche | an organisms complete role or function in its ecosytem |
| astronomy | the study of objects in space and their characteristics |
| stars | huge balls of hot, glowing gas that produce their own heat and light |
| universe | everything that exists |
| galaxy | a group of billions of stars, the objects that orbit the stars, gas, and dust |
| solar system | a group of object in space made up of a star and the planets and other space objects that revolve around it |
| planet | a large, round body that revolves around a star |
| dwarf planet | nearly round bodies whose orbits cross the orbits of other bodies |
| revolve | to move around another thing |
| orbit | the path that an object takes around another object in space |
| rotate | to spin |
| axis | an imaginary line that runs through Earth's center from the North Pole to the South Pole |
| bioengineering | applying the engineering design process to living things |
| biotechnology | a product used to benefit organisms of their environment |
| engineering | using knowledge of science and mathematics to find solutions to everyday problesm |
| technology | any device that people use to meet their needs and solve practical problems |
| prototype | a working model |
| criteria | standards that help engineers measure how well their design is doing its job. |
| Microscopic | too small to see with just your eyes alone |
| balance | a tool used to measure mass, the amount of matter in an object |
| spring scale | a tool used to measure the force, or pull, of gravity on an object |
| accurate | correct, without error |
| investigation | a procedure carried out to carefully observe, study, or test, something in order to learn more about it |
| science | the study of the natural world. Science involves making observations and performing investigations. |
| evidence | information collected during a scientific investigation |
| opinion | a belief or judgment |
| scientific method | ways that scientists perform investigations. Scientific methods use logic and reasoning |
| experiment | an investigation used to test an hypothesis in which all the conditions are controlled |
| variable | any condition in an experiment that can be changed |
| control | the setup to which all the other setups are compared |
Created by:
Teach456
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