input: OPTIONS:
- gas
- lava
- silicon
- liquid Now, answer this question: Answer the following question given this paragraph: The dense, iron core forms the center of the Earth. Scientists know that the core is metal from studying metallic meteorites and the Earth's density. Seismic waves show that the outer core is liquid, while the inner core is solid. Movement within Earth's outer liquid iron core creates Earth's magnetic field. These convection currents form in the outer core because the base of the outer core is heated by the even hotter inner core. Q: Seismic waves show that the inner core of the earth is solid while the outer core is what? A:
A:
output: liquid

Answer the following question given this paragraph: The earliest Earth did not have an atmosphere or free water. The planet was far too hot for gases and water to collect. The atmosphere and oceans that we see today evolved over time. The gases came from volcanic eruptions and from comets. Q: Gases on earth originated from comets and what events? A:

OPTIONS:
- supernovas
- black holes
- tides
- volcanic eruptions

Answer: volcanic eruptions

Problem: OPTIONS:
- velocities
- thermals
- amperes
- joules
Q: Answer the following question given this paragraph: The heat that is either absorbed or released is measured in joules. The mass is measured in grams. The change in temperature is given by , where is the final temperature and is the initial temperature. Q: In what unit is heat measured in? A:
Answer: joules

Problem:OPTIONS:
- graphite
- hydrogen
- oxygen
- carbon

Answer the following question given this paragraph: Hardness helps determine how an element (especially a metal) might be used. Many elements are fairly soft (silver and gold, for example) while others (such as titanium, tungsten, and chromium) are much harder. Carbon is an interesting example of hardness. In graphite (the "lead" found in pencils) the carbon is very soft, while the carbon in a diamond is roughly seven times as hard. Q: Although they differ vastly in hardness, pencil lead and diamonds both contain what element? A:
****
A: carbon

Answer the following question given this paragraph: Diamonds like the one pictured in the Figure below are the hardest of all minerals. Is a diamond a crystalline or an amorphous solid? How do you know?. Q: What is the hardest of all minerals? A:
OPTIONS:
- titanium
- gold
- platinum
- diamonds
diamonds

Answer the following question given this paragraph: Saturn's composition is similar to Jupiter's. The planet is made mostly of hydrogen and helium. These elements are gases in the outer layers and liquids in the deeper layers. Saturn may also have a small solid core. Saturn's upper atmosphere has clouds in bands of different colors. These clouds rotate rapidly around the planet. But Saturn has fewer storms than Jupiter. Thunder and lightning have been seen in the storms on Saturn ( Figure below ). Q: Saturn is made mostly of helium and what else? A:
OPTIONS:
- nitrogen
- carbon
- hydrogen
- hydrogen

Answer:
hydrogen