Scavenger+Hunt+Answer+Key

Sub category: Gravity(by Kepa Sarduy) 1. What is [|gravity] ? Answer: Gravitation, or gravity, is a natural phenomenon by which objects with mass attract one another.

2. What was [|Newton’s] conclusion? Answer: Newton came to the conclusion that any two objects in the Universe exert gravitational attraction on each other

3. Without gravity what would happen to [|you] ?

Answer: Without gravity, you'd float off into the atmosphere.

Sub category: Energy (by: Lisa Roux)

4. Two forms of energy are fundamental – any other form consists of one or both of these. They are _ __and__ __.__ Answer: It is sometimes convenient to distinguish [|potential energy] (which is a function of coordinates only) from [|kinetic energy] (which is a function of coordinate time [|derivatives] only).

5. What does scientist use to calculate quantities of energy? answer: b. Newtonian equations

6. Write two or more sentences explaining the conversion of matter. Answer: The conversion of matter releases energy in the sun and other stars. The sun’s core is so hot that atomic nuclei and electrons move about independently. The most common nucleus is that of the simplest form of hydrogen—a single proton. The protons have so much kinetic energy that they sometimes collide and //fuse// (join), producing a hydrogen nucleus consisting of a proton and an electrically neutral //neutron.// But the mass of that nucleus is less than the sum of the masses of a proton and a neutron when they are separate. The “missing matter” has been converted to energy. Conversion of matter to energy also produces the heat energy that is used to generate electric energy in nuclear power plants. In addition, matter-to-energy conversion provides the tremendous destructive force of nuclear weapons.

Sub Category: Stars (by: Courtney Sneed) 7. True/False: A star orbits a planet. Answer: False. Planets are much smaller, they go around stars. 8. Explain in your own words: What is a binary star system? Answer: Two mutually orbiting stars. 9. How hot is the Sun’s core? A. 1,000,000° F. B. 27,000,000° F. C. 11,000,000° F. D. 50,000,000° F. E. None of the above Answer: B

10. In 1930 Pluto was named as the 9th planet of our solar system. In 2008 this changed. Pluto was downgraded to the status of ‘dwarf planet’ and officially there are now only 8 planets. Prior to 2005 Pluto had 1 [|moon], now it has 2. They are called? Answer: **Nix** and **Hydra**. 11. Jupiter is the largest planet in our solar system. This planet contains 2 1/2 times the mass of all the other planets combined. Unlike our own planet, Earth, Jupiter has more than 1 moon. The four largest [|moons] of Jupiter are? Answer: **Callisto**, **Europa**, **Ganymede**, and **Io**. 12. In 1915, Albert Einstein proposed to the world a revolutionary new theory. It was called the General Theory of Relativity. One of the first real physical proofs of Einstein’s theory was its solution to why the planet Mercury’s orbit around the Sun, using calculations from Newton’s laws, to have errors. These [|errors] were accounted for in the Answer: **anomalous** **precession** of the **perihelion****__**.