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8 - Science - Ch 1
Summary of Chapter 1 Slides
| Question | Answer |
|---|---|
| Physical science is the study of | matter and energy |
| Matter refers to... | all the "stuff" that exists in the universe |
| Does matter include everything you can see and some things you cannot see? | Yes |
| What gives matter the ability to move and change? | energy |
| Name 3 forms that energy can take. | electricity, heat and light |
| what is physics? | The study of energy and matter, and their interactions. It is concerned with matter and energy at all levels—from the most fundamental particles of matter to the entire universe. |
| Important concepts in physics include ________, _________ such as magnetism and gravity, and forms of __________ such as light, sound, and electrical energy. | motion, forces energy |
| Chemistry is the study of ___________ and ___________ and how they interact mainly at the levels of _________ and __________ | matter and energy atoms and molecules |
| Basic concepts in chemistry include chemicals and _________ reactions. | chemical |
| All chemical reactions involve | energy |
| Who first described the scientific method in the 1600's? | Sir Francis Bacon |
| The scientific method includes the following steps: 1. Make an____________ 2. Construct a _____________ 3. Test the ____________ by doing an _______________ 4. ____________ the data and report the ___________ 5. Draw a ________________ | 1. observation 2. hypothesis 3. experiment 4. analyze results 5. conclusion |
| A __________ _____________ is widely accepted because it is: 1. supported by a great deal of _____________ 2. It has been tested many times using the ___________ method and has yet to be _______________ | scientific theory evidence scientific disproven |
| A _____________ __________ is a statement describing what always happens under certain conditions | scientific law |
| An example of a scientific law is ___________'s law of motion | Newton's |
| What is a hypothesis? | An educated guess |
| The following 2 things make a statement a scientific hypothesis instead of an educated guess: 1. a scientific hypothesis must be _________ and 2. a scientific hypothesis must also be ________________ | testable falsifiable |
| An experiment is defined as the... | ...controlled scientific study of a controlled set of variables |
| A variable is a factor that can take on different _________ | values (examples: the speed of an object going down a ramp, the steepness of a ramp) |
| Another name for an independent variable is a _____________ variable | manipulated |
| An independent variable is one that is ____________ by the researcher | changed |
| The independent variable appears on the ___ axis. | x-axis |
| Another name for an dependent variable is a _____________ variable | responding |
| A dependent variable is one that changes if the _______________ variable changes | independent |
| The independent variable appears on the ___ axis. | y-axis |
| A __________ group is used to compare experimental groups | control |
| Every experiment must have a _________ group. | control |
| The control group holds the independent variable _______ | constant |
| Suppose you are creating a line graph of the average number of tornados by month in the U.S. Would "Average # of Tornados" or "Months" by the independent variable (hint: which one changes) | 1. Average # of Tornados is the independent variable because it can change each month |
Created by:
paulesumner
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