click below
click below
Normal Size Small Size show me how
Science- ch 1
| Question | Answer |
|---|---|
| a process of gathering knowledge about the natural world | science |
| the study of matter and energy | physical science |
| stuff everything is made of | matter |
| ability to do work | energy |
| study of all forms of matter, including how matter interacts with matter | chemistry |
| looks mostly at energy and the way that energy affects matter | physics |
| ways in which scientists answer questions and solve problems | scientific method |
| application of science for practical purposes | technology |
| representation of an object or system | model |
| model that looks like what it represents | physical model |
| model made up of mathematical equations and data | mathematical model |
| model of systems of ideas or are based on making comparisons with firmiliar things to explain an idea | conceptual model |
| a unifying explanation for a broad range of hypotheses and observations that have been supported by testing | scientific theory |
| a summary of many different experiments | scientific law |
| how are laws and theories different? | laws tell you what happens, not why it happens |
| what system is used for measuring? | SI system (metric) |
| what does SI stand for? | international system of units |
| what is used to measure length? | meter |
| what is used to measure mass? | kilogram |
| what is mass? | amount of matter in something |
| what is used to measure volume? | liters or mililiters= liquids cubic meters or centimeters= solids |
| what is volume? | amount of space that something occupies |
| what is the formula for density? | mass(g) ------- volume (ml/cm3) |
| what is density? | amount of matter in given volume? |
| what is used to measure temperature? | celius or kelvin |
| what is temperature? | how hot or cold something is |