What’s the difference between Doppler radar and satellites?A. Doppler radar can measure the speed

What's the difference between Doppler radar and satellites? A. Doppler radar can measure the speed of an approaching storm; satellites
take pictures of an approaching storm.
B. Doppler radar uses a physics concept; satellites use a chemistry concept.
C. Doppler radar uses radio waves to work; satellites use ultraviolet rays to
D. Doppler radar is used to make long-term weather predictions; satellites
make short-term weather predictions.

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  1. A. content                                        


    Content validity: In psychological research, the term "content validity" is described as the degree to which the different items on a particular test or study are considered as "fairly representative" of an entire domain that particular test or study seeks to analyze or measure. However, content validity tends to measure knowledge of a specific content domain for which it has been designed to analyze knowledge.

    In the question above, Michael is questioning the content validity of the test.

  2. A is the correct option.


    Physics primer is a set of mathematics topics that are relevant to introductory physics courses. The idea behind the physics primer is to provide the students a strong base of mathematics concept that can be helpful for them in the future courses of physics. It should be taken before the introductory lessons of physics. It will help out students in solving those physics problems that involves mathematics. Physics primer is usually comprised of tutorials, answers of specific questions and videos.

  3. How vulcanos, montains and earthquakes form

    First, you have to understand what Convection is:  

    Did you know that the hotter something, the more it expands? This happen because heat, at an atomic level, is nothing but vibration. If a liquid is hot, it means that there is more vibration between it's atoms. And, more vibration causes to have more space between the atoms, which causes the density to decrease.  

    So, when a liquid has it's top cold, and it's bottom hot, the top will be more attracted by the gravity than the bottom, because it's more dense. This will cause the top to want a lot to get down, and the bottom, because of the pressure of the top, will want to go up. This will cause a spiral movement; the bigger the difference, the faster and the more violent this spiral movement will be (and that's what causes hurricanes)  

    The Earth, when it was formed, was really, REALLY hot. It has being losing it's heat ever since, but, since there is not air in the space, it can only lose it's eat though radiation, which is very slow. And also, the bigger something is, the slower it cools down, because there is more vibration, more movement, more energy to be lost. The earth was formed 4,5 BILLIONS of years ago. That's A LOT of time. But the lost of heat by radiation is so slow, and the earth has so much heat to be lost, that it still didn't cool down that much.

    You can think of Earth like a hot potato that got out of the oven just a while ago; the outer part is already cold, but just take a bite, and you will see how HOT it's insides are. You can't take a bit out of earth, of course, but it's insides are a lot hotter that the outside, because it's the outside that loses eat. The insides have to wait for the outsides to cool down, and then lose eat to the outsides.  

    So... we got a planet that's really hot in the inside, so hot that it's mantle is made out of liquid rocks!  

    Now, it's time to connect the dots: the upper part of the mantle loses heat faster than the inner one. This causes a spiral movement, and, since the tectonic plaques are floating in this liquid, they end up moving as well!  

    When two plaques move one against each other, they crash against themselves, and this causes an earthquake. If they move away from each other, this creates an open space; and since the mantle has, like, THE WHOLE CRUST OF THE PLANET CRUSHING IT, the mantle is craving to get out, so when there is an opening, it squirts out like crazy, creating an eruption. After a while, the magma solidifies, creating a volcano.  

    The process of losing heat though radiation, the Pascal's Principle of the pressure that the crust makes on the mantle, the way the outer layers lose heat faster than the inner ones, how rocks get liquid under high temperatures, convection, the gravity that holds our planet together... all of those physical processes have a high impact on earth's geology.

  4. The earth's geologic process that used to operate earlier, still operated to day but not with the same intensity.


    The geologic process of the earth is responsible for earthquakes, volcanism, landslides, subsidence. Isostatic Adjustment due to buoyancy. The four major processes are erosion, tectonics, impact cratering, and volcanism. The earth is shaped and reshaped by these geologic events. Erosion is a dominant process that leads to the wear and tear of the earth's geomaterials and created distinctive landforms on the surface of the earth. It is responsible for landslides, rocks slides, and avalanches. It is aided by exogenetic factors like the sun. The tectonics are an essential part of the earth's movements as the earth is made up of plates each has its distinctive boundaries that form and deform with respect to another. Volcanism is another geographic process that has been active for centuries over the surface of the earth and it created as a state of isostatic adjustment of the gases and pressure that are built inside the surface of the earth. The earth's process follows the laws of physics and relation between them can be explained by the discipline of earth science. Which is a quantitative understanding of how earth process world and evolves.

  5. A. A set of mathematics topics that are relevant to introductory physics courses.


    Physics Primer consists of tutorials, videos, and answers to specific questions, the main idea is to build a solid structure of math concepts for introductory physics. Another great thing about Physics Prime is that it helps students to visualize problems and solve them from different perspectives. The concepts built throughout the course can positively impact the result of the student especially if the course is taken before the physics introductory course.

  6. Understanding physics impacts biology in many ways because physics have huge role in the research part of biology like if we need to obtain a pure culture of bacteria we need to understand the physics of temperature on which bacteria optimally grow.

    We have to understand some of the laws like beer-lambert law which determines the relation between absorbance of light and concentration of substance which is used in spectroscopy technique.

    Physics is very important in understanding the molecular interaction and forces between molecules found in living organisms. Medical industry is dependent on discoveries and invention occurred in the field of physics for treatment of humans. Therefore understanding of physics has positively impacted biology.

  7. A. a set of mathematically topics that are relevant to introductory physics.


    The physics primer is not defined as the online comprehensive mathematics textbooks. It is the set of topics of mathematics which gives students trouble and remember.

    Therefore, it is defined as the process of physics problem solving. So, mathematically skills are covered in physics course as a primer related success.

    Therefore, it is a set of topics of mathematics that are relevent to introductory physics.

  8. What Is the Difference Between Satellite & RADAR Pictures? Satellites use a camera to take pictures. A radar transmits an electronic signal that bounces off objects and returns for analysis. Both systems can detect stationary or moving objects, but the display presented on a viewing screen can differ immensely.


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