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Physical Science
test chap 1: 9th grade
| Question | Answer |
|---|---|
| which of the following is not a branch of biology: ecology, botany, geology, medicine | geology |
| technology can best be defined as what | applied science |
| what does it mean to say that " no experiment is a failure"? | all experiments are observations of real events |
| which instrument has been used to detect the oldest, most distance objects in the solar systems | radio telescope |
| which question cannot be answered by an experiment?- does penicillin kill salmonella bacteria; is rabies caused by a virus? ; did a comet impact kill the dinosaurs; can radiation cause cancer | did a comet impact kill the dinosaurs |
| what is the are of a room that is 4x10 to the second cm long and 2x10 to the third cm wide | 8x10 to the fifth cm squared |
| a precise measurement is one that is | as exact as possible |
| a tool used to break light into a rainbow like spectrum is a | spectroscope |
| SI is considered a consistent system because | it is used worldwide |
| which unit is used to measure the mass of a computer | kilogram |
| how many significant figures are in 7.357 | four |
| how many significant figures are in 70,200 | three |
| what is 0.0000043 g in scientific notation | 4.3x10 to the negative sixth grams |
| the main branches of natural science are | life, physical, and earth science |
| what do scientists who do pure science do? | they do experiments to find out about the world |
| what is 123 centimeters in meters? | 1.23 m |
| a tool used by physicists to smash atoms is a | particle accelerator |
| a scientific theory is an explanation that | has been tested by many obersvations |
| the answer to 28 is | d |
| 78,900,000,000 is scientific notation | 7.89x10 to the tenth |
| chemistry and physics are the two branches of _____ science | physical |
| pure science is the continuing search for scientific ______ | knowledge |
| the application of science for practical purposes is referred to as | technology |
| scientists depend on ____ to find practical uses for their discoveries | engineers |
| a theory is a scientific ____ for a phenonmenon based on observation, and reasonings | explanation |
| a ___ description of a scientific law would use a mathematical equation | quantative |
| theories are sometimes replaced as a result of new | discoveries |
| the scientific method gives scientists a way to ____ their thinking about a problem or question | organize |
| in the SI system, the prefix ___ means one milionth | micro |
| the extent to which a measurement approaches the true value is referred to as | accurate |
| a mathematical representation of an object or event is a | model |
| astronomers use ____ to magnify distant objects | telescopes |
| length , mass, and temperature are four of the seven SI ____ ____ | base units |
| in the SI system, the prefix __ means one billion | giga |
| the application of scientific knowledge for practical purposes | technology |
| a branch of earth science that studies the physical nature and history of earth | geology |
| observing, studying, and experimenting to find the nature of things | science |
| a branch of physical science that studies matter and its changes | chemistry |
| an explanation of how a natural process works | scientific theory |
| a branch of earth science that studies the atmosphere and the weather | meterology |
| a branch of biology that studies the balance in nature | ecology |
| a representation used to study an object or event | model |
| a description of a process in nature that can be tested by repeated experiments | scientific law |
| a branch of physical science that studies forces and energy | physiccs |
| 5675 g equals _____ kg | 5.675 |
Created by:
ava.caydence
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