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science
process skills and chapter 7
| Question | Answer |
|---|---|
| observing | the ability to identify properties, structures, etc. through use of all senses |
| predicting | the ability to guess outcomes on basis of previous experiences |
| prediction | a statement made about the future outcome of an experiment based on past experiences or observations |
| problem | the statement of what needs to be solved |
| procedure | an ordered series of all the steps followed to help answer a question |
| (experiment) purpose | the statement of what you want to accomplish in an experiment to solve a problem. The reason for doing the experiment |
| qualitative data | data that is based on observable characteristics of things or events that can be collected using the senses. Example: The juice tastes sweet to me. |
| quantitative data | data that is based on measurable characteristics of things or events such as mass, volume, length, and quantity. Example: There is one liter of juice in the bottle. |
| questioning | the ability to ask pertinent questions regarding experiences |
| recording | ability to collect, record and tabulate data meaningfully |
| repeated trails | experimental tests done more than once |
| replication | repeated trails on more than one subject, as well as controls, in experimental tests |
| researching | the ability to seek additional info, sources, conditions, personnel, events |
| (data) results | a complete account of all data that was collected during the experiment (including charts, graphs, pictures, etc.) |
| science | the study of nature and the physical world using the methods of science to find things out |
| scientist | a person who "does" science and uses the methods of science |
| scientific law | a generalized pattern in nature |
| scientific method | a systemized testing of ideas, hypothesis, predictions and inferences about the natural world. A process used to try to solve a problem. |
| scientific theory | a casual explanation for generalized patterns in nature that is supported by much scientific evidence based on data collected using scientific methods |
| variation | slight differences among objects, organisms or events that are all of the same basic type |
| variable | something that can affect a system being examined, and is therefore a factor that may change in an experiment |
| dependent variable | a factor that responds to changes in other variables in an experiment. It is what will happen when to apply the independent variable. Example: (heat lamp), (ice cream melt rate) |
| independent variable | a factor that can be changed or manipulated in an experiment by the scientist. It is what you are going to do to solve the problem. |
| (conclusion) generalizing | the ability to sum up experiences into some kind of conclusion |
| hypothesis | a testable statement of how a scientist thinks a problem can be solved; educated guess |
| identifying | the ability to describe and interpret sensory and qualitative aspects of learning |
| interdisciplinary skills | the ability to identify those areas of science which are interrelated to other disciplines such as math. English and Social Studies |
| interpreting | the ability to analyze data validly (similarities, dissimilarities, cause/effect) |
| materials | a list of all the items needed to conduct an experiment/investigation to see if the hypothesis is true |
| measuring | the ability to find quantitative differences, to estimate, calculate, etc. (metric); to compare characteristics (such as mass, length, volume) with a standard (such as grams, meters, liters) |
| (procedure) methods | an ordered series of stops followed to help answer a question |
| observation | the data collected by using the senses to learn about objects and events |
| physical change | a change in size, shape, or state of matter. (no new substances created?) |
| (water) solid | ice- H2O |
| (water) liquid | H2O- melting point- 32 degrees F |
| water vapor | (gas) H2O- boiling point- 212 degrees F |
| solid | matter with definite shape and definite volume. Molecules are tightly compacted- little room for movement |
| liquid | matter with no definite shape but definite volume. Molecules have more room for movement- they flow |
| gas | matter that has no definite volume and no definite shape. Molecules have the most room for movement. They have the most kinetic energy |
| mixture | a physical change which is a combination of two or more substances that can be easily separated. Example: trail mix |
| solution | a physical change that is a mixture of two or more substances involving a liquid. Normally a solvent and a solute can be easily separated. Example: saltwater |
| colloid | a physical change where two or more substances, are combined and particles are evenly distributed. Example: milk |
| suspension | a physical change that is a colloid where particles are not evenly distributed. Particles are generally larger. |
| if you add heat to matter, the atoms that make up the matter will begin to move... | faster |
| type of matter that is most common in the universe... | plasma |
| point at which a liquid changes into a gas... | boiling point |
| number of states of matter... | 4 |
| when a gas cools down to a liquid... | condensation |
| point at which a liquid turns into a solid... | freezing point |
| point at which a solid turns to a liquid... | melting point |
| type of change when you freeze water? | physical |
| when a liquid reaches its boiling point and turns into a vapor... | evaporation |
| sublimation | when a solid transforms directly into a gas. Example: dry ice |
| matter in a gas state will_________ to fill its container | expand |
| you can change the state of matter by adding or subtracting... | heat |
| the particles in liquids _____________past each other. | float |
| if you subtract heat from matter, the atoms that make up the matter will begin to move... | slower |
| the particles in a solid state move around__________ point. | fixed |
| the pull on the surface of liquids that allow liquids to form drops when they fall... | surface tension |
| what happens in the process of evaporation? | the liquid hits boiling point and turns the liquid to a gas. The gas goes into the atmosphere |
| why are changes in phase physical changes? | the atomic structure is the same; its nly changing the way it looks |
| why is rust forming on a nail not a physical change? | rust is a new substance that is created through a chemical change |
| why are most physical changes easy to recognize? | there appearance has changed |
Created by:
katnissgirl714
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