Which two generalizations can be made based on what you know about cycles of matter in a closed system? New matter is added, and old matter is destroyed. Matter changes its physical form, allowing it to return to its original state. The amount of matter within the system remains the same. Matter and energy can cross the boundaries of the system. The cycle has a well-defined starting and stopping point.
Answers: 2
Biology, 22.06.2019 02:30, ComicSans10
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?
Answers: 1
Biology, 22.06.2019 09:30, danielapenaoypgns
This is the process of making a prediction based on the results of prior observations of similar events.
Answers: 1
Biology, 22.06.2019 12:30, Hunter1471
Creating new things to solve problems and improve life depends on the close interaction of which two fields?
Answers: 2
Which two generalizations can be made based on what you know about cycles of matter in a closed syst...
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