Q: Answer the following question given this paragraph: A wheel and axle is a simple machine that consists of two connected rings or cylinders, one inside the other. Both rings or cylinders turn in the same direction around a single center point. The inner ring or cylinder is called the axle, and the outer one is called the wheel. Besides the Ferris wheel, the doorknob in the Figure below is another example of a wheel and axle. For more examples, go to this URL:. Q: A doorknob and a ferris wheel are examples of what type of simple machine? A:

OPTIONS:
- ball and socket
- lever and pulley
- ball and axle
- wheel and axle

A: wheel and axle

input: OPTIONS:
- six
- ten
- four
- two Now, answer this question: Answer the following question given this paragraph: The primary cause of tides is the gravitational attraction of the Moon. This causes two high and two low tides a day. Q: How many low and high tides occur per day? A:
A:
output: two

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

Problem: OPTIONS:
- centrifugal
- supramolecular
- gravitational
- intermolecular
Q: Answer the following question given this paragraph: The boiling points of liquid also correlate to the strength of the intermolecular forces. Recall that diethyl ether has weak dispersion forces, which meant that the liquid has a high vapor pressure. The weak forces also mean that it does not require a large an input of energy to make diethyl ether boil and so it has a relatively low normal boiling point of 34.6C. Water, with its much stronger hydrogen bonding, has a low vapor pressure and a higher normal boiling point of 100C. Q: The boiling points of liquid also correlate to the strength of which forces? A:
Answer: intermolecular

Problem:OPTIONS:
- aquiomes
- tundra
- water biomes
- marine biomes

Answer the following question given this paragraph: Aquatic biomes in the ocean are called marine biomes. Q: Aquatic biomes in the ocean are called what? A:
****
A: marine biomes

Problem:OPTIONS:
- difference in wind
- difference in elevation
- difference in temperature
- difference in charge

Answer the following question given this paragraph: During a thunderstorm, some parts of a thunderhead become negatively charged. Other parts become positively charged. The difference in charge creates lightning. Lightning is a huge release of electricity. Lightning can jump between oppositely charged parts of the same cloud, between one cloud and another, or between a cloud and the ground. You can see lightning in Figure below . Lightning blasts the air with energy. The air heats and expands so quickly that it explodes. This creates the loud sound of thunder . Q: What causes lightning during a thunderstorm? A:
****
A:
difference in charge