Exam Review

3. Analyze: What do you notice about the density of the Styrofoam pieces? The density remains the same.

Review Questions for Mid-Term 1) What constitutional clause allows laws enacted by the federal government to take priority over conflicting state laws?

NASA discovered a system of seven Earth-size planets around a single star outside our solar system. All of these seven rocky planets could have water which is a key to life and three of them are firmly located in the habitable zone. This system is about 40 light-years (235 trillion miles) from Earth. Because of locating outside of our solar system, these planets are scientifically known as exoplanets. This exoplanet system is called TRAPPIST-1, name of telescope in Chile. Researchers using TRAPPIST announced they had discovered three planets in the system and then discovered more to seven by several ground-based telescopes. Moreover, NASA used data from Spitzer to measure the sizes of the seven planets and estimates the masses and density of six of them. The data indicated that they are likely to be rocky and could have liquid water on their surfaces but the mass of the seventh has not been estimated yet. Scientists assumed it could be an icy like snowball world. The temperature of TRAPPIST-1 star is cooler than our sun,

5. Calculate the density of an object that has a mass of 43 g and a volume of 56.0 mL.

Jupiter is a gas planet with a possible chance of a core. On the outside of Jupiter, what we can see, is its atmosphere. Jupiter’s atmosphere is layered. It contains hydrogen, helium (a

The next step is to isolate Mass (M). Since Mass needs to be directly proportional to v^2 r and inversely proportional to the Gravitational Constant (G), both sides of the equation must be divided by Gm. At this point all the m on the left side of the equation should be canceled. The Gm on the right side will also be canceled out, leaving M by itself on the right side.Now that we have gotten an equation that solves for Mass (M), we can start solving for M, but only once the velocity is known. Due to Object X’s moon having a circular orbit, v can be substituted with the circumference (2πr) divided by the time (P) it takes to make a complete orbit. Since velocity was squared, both the circumference and time will now be squared as well. Once all

4. A solid block of exactly 100.0 cm3 has a mass of 153.6 g. Determine its density. Will the block

The surface of both of these bodies is known to be cold because of the lack of atmosphere and their position with reference to the Sun.

D. A sample of gold (Au) has a mass of 26.15 g. Given that the theoretical density is 19.30 g/mL,

Would your mass change if you traveled from planet to planet? Why? No because mass doesn’t change from planet to planet it stays the same no matter where you are.

The snow line is a line that represents the point at which temperatures are cool enough for less dense materials such as hydrogen to form snowflakes. While elements like metals can become solid at much higher temperatures, it takes intense cold to allow others to condensate. The snow line creates the differences between Jovian and Terrestrial planets. Jovian planets are outer planets with cores surrounded by gas, while Terrestrial planets are small, dense planets located closer to the sun. Jovian planets form past the snow line, where more elements are able to solidify and contribute mass until the planets can pull gases in with their gravitational pull, creating huge planets much larger than the Terrestrials. Terrestrials aren't able to obtain

The distance from the sun when inquiring about terrestrial planets is that the terrestrial planets are closer to the sun and the Jovian planets are farther away. The sizes of the Jovian planets are larger than the terrestrial planets. The atmosphere of terrestrial planets is composed of carbon dioxide and nitrogen gases, while the Jovian planets contain an abundance of hydrogen and helium gases are found in their atmosphere. The Terrestrial planets satellites are few in number. The Jovian planets, satellites are more in number. One of the main differences that are seen between terrestrial and Jovian planets is their surfaces. The terrestrial planets are made of solid surfaces, while the Jovian planets are made of gaseous surfaces. Another example

The formula to find density is P = M / V. P is density, M is mass, and V is volume.

Conduction, Convection and Radiation are three different methods to transfer energy from one source, such as an object, to another. The method of conduction takes place when atoms or molecules move at a higher speed after heat is absorbed at the surface. In doing this, the particles bump into each other, transferring their energy. This allows heat energy to be passed through the object until the heat source is removed. Convection is the flow of molecules or atoms through a fluid state such as liquid or gas. When heat is added, the molecules that are closest to the source get hotter and are pushed to the top forcing the cooler molecules to the bottom to then repeat the process. Radiation is the transfer of energy through waves, which can be transferred through solids, liquids and gases. This process does not have a need for particles for energy to pass through. Insulators are used to stop or reduce the transfer of heat energy via conduction, convection or radiation. Insulators to prevent conduction contain many air pockets. Solid materials are often used to reduce convection and reflective insulators are used in the reflection of radiation.

The four jovian planets are Jupiter, Saturn, Neptune and Uranus. Similarities of Jovian planets include that: