Problem: The highest point of a wave is the crest. The lowest point is the trough. The vertical distance between a crest and a trough is the height of the wave. Wave height is also called amplitude. The horizontal distance between two crests is the wavelength. Both amplitude and wavelength are measures of wave size. The size of an ocean wave depends on how fast, over how great a distance, and how long the wind blows. The greater each of these factors is, the bigger a wave will be. Some of the biggest waves occur with hurricanes. A hurricane is a storm that forms over the ocean. Its winds may blow more than 150 miles per hour! The winds also travel over long distances and may last for many days.

Question: "How are the lowest and highest points of a wave related to its amplitude?"

Answer: "The vertical distance between the highest point of the wave and the lowest point of the wave is the height of the wave, which is also called its amplitude"

OPTIONS:
- no
- yes
Answer: yes

Problem: Meridian National Corp. said it sold 750,000 shares of its common stock to the McAlpine family interests, for $1 million, or $1.35 a share. The sale represents 10.2% of Meridian's shares outstanding. The McAlpine family, which operates a number of multinational companies, including a London-based engineering and construction company, also lent to Meridian National $500,000. That amount is convertible into shares of Meridian common stock at $2 a share during its one-year term. The loan may be extended by the McAlpine group for an additional year with an increase in the conversion price to $2.50 a share. The sale of shares to the McAlpine family along with the recent sale of 750,000 shares of Meridian stock to Haden MacLellan Holding PLC of Surrey, England and a recent public offering have increased Meridian's net worth to $8.5 million, said William Feniger, chief executive officer of Toledo, Ohio-based Meridian.

Question: "How many total shares of stock has Meridian sold to two companies recently?"

Answer: "1,500,000 shares"

OPTIONS:
- no
- yes
Answer: yes

Problem: Relying on an animal to come by is risky. A flower may have to wait a long time for the right animals to come by. What if one never passes close enough to the flower? Hoping the wind will blow is also risky for a plant. What if the wind does not blow? What if the blowing pollen does not land on another flower? The wind could even blow the pollen over the ocean where it is wasted. Giving free nectar is costly. It is not a good use of the plants energy. A plant uses a lot of energy to produce nectar. Some animals may just drink the nectar. They may not carry off any pollen in return. To improve their chances, plants evolved special traits. For example, they developed ways to hide their nectar. Only certain animals were able to get at the plants hidden nectar. These specific animals might be more likely to visit only flowers of the same species. This was also a benefit for some animals. Animals also evolved special traits to get to the nectar.

Question: "What are ways of transferring pollen?"

Answer: "Conduction"

OPTIONS:
- no
- yes
Answer:
no