The focus is the same: physical science, which is a very broad category. This course now has 15 modules, rather than 16. **Below is a summary of the contents of the 3rd Edition:** Module 1: Review of some of the basics that were covered in several modules of General Science 3rd edition; scientific method, making obs...
**The math portion of the Physical Science course involves:** 1. How to convert measurements/units 2. Simple rearranging of equations: given s=d/t, the student needs to be able to rearrange the equation and solve for distance or time as well as speed. 3. Dividing and multiplying fractions These are all things tha...
The editors of the dictionary do not understand physics! There is no such thing as centrifugal force. For a force to occur, an equal and opposite force must exist as well (Newton’s Third Law). There is no equal and opposite force for “centrifugal force,” since it does not exist. ...
Remember, there are two theories of gravity: the graviton theory and the general theory of relativity. In the graviton theory, massive object exchange little particles called “gravitons.” This is just like electrically-charged objects exchanging photons (the electroweak force) and protons exchanging pions (the strong f...
The complete reaction is: 4Cu (s) + 6H2O (l) + 2CO3 (aq) –> 2Cu2(OH)2CO3 (aq) + O2 (g) + 4H2 (g) ...
The electrons do not fall into the nucleus because they have a velocity that keeps them in orbit. The attraction between the positive and negative charges is enough to continually turn the electrons so that the move in a circle, but it is not strong enough to get them any closer to the nucleus. If the electrons had n...
The wire attached to the negative terminal of the battery didn’t turn green because the reaction that takes place there cannot form copper hydroxycarbonate. In order to form that compound, you must have oxygen, and oxygen is formed only at the wire connected to the positive side of the battery. On the wire connected to...
A bulb thermometer is the typical glass thermometer that has a little bulb on the bottom, which is usually full of a red liquid. You read the temperature by looking at the line of red that rises from the bulb. If you go to any garden center, the outdoor thermometers that they have are usually bulb thermometers. ...
The most important thing to determine is WHAT you measured the temperature OF. If you measured the temperature of the bag, then the temperature will be higher for the carbon dioxide bag. That’s because the carbon dioxide is trapping the heat, and thus, it heats up. Therefore, your thermometer was probably in thermal co...
This is just like the gravity problems in Module 11. The electrical force depends directly on the charge involved. Whatever you multiply or divide the charge by, the force must be multiplied or divided by the same number. The force is also inversely related to the square of the distance. If you multiply the distance by...