GED Set 7

In the past, people thought that the Earth was flat and that a ship that sailed too far would fall off the edge of the world. The Earth appears flat because the Earth is too large for humans on Earth to see its curvature. Several events helped shed the misconceptions. For one, during a lunar eclipse, the Earth is positioned between the sun and the moon. It eclipses the moon by casting a shadow on it. The shadow the Earth casts is round. When Magellan circumnavigated the Earth, he proved that one could not fall off the edge of the Earth, because the Earth was round and had no edges. Finally, space missions provided us with images of our round Earth from far away and showed us how beautiful our planet looks, even from a distance. With which misconception about the Earth is the passage concerned?

According to Newton's laws of motion, an object set in motion remains in motion unless a force acts on it. If you suspend an object from a string and make it swing, the object will swing for a while, then slow down and stop.Why does the suspended object stop swinging?

In an exothermic process, heat is released by the process to the surroundings. An example of an exothermic process is burning wood. An endothermic process requires the input of heat from the surroundings. An example of an endothermic process is boiling water.Which of the following is an endothermic process?

Ice floats on water because

A woman is most likely to get pregnant if she has unprotected sex a few days before and on the day of ovulation, when the egg is released from the ovaries. The release of the egg is hormonally stimulated, meaning that a hormone in the woman's body triggers ovulation. On average, women ovulate around the 14th day of their menstrual cycle. The following is a graph showing the levels of three hormones throughout the menstrual cycle of an average woman. Based on the graph, which hormone is most directly responsible for triggering ovulation?

Most bacteria cannot grow in high concentrations of salt. As a result,

In the early 19th century, almost all peppered moths collected by biologists in the U.K. were pale and mottled. Only rarely was a collector able to find a dark-peppered moth. After the Industrial Revolution, when furnaces filled the air with dark soot, the light-peppered moth became rare and the dark peppered moth was most common in industrial cities. A reasonable explanation for this change is that the dark moth was less likely to be seen and eaten by birds against the dark background. This explanation illustrates the principle of

All of the following are mammals EXCEPT

Minerals are an important component of the human diet. Some minerals are needed in relatively large amounts. These include calcium, phosphorus, potassium, sulfur, chlorine, and magnesium. Others, including iron, manganese, and iodine, are needed in smaller amounts. Humans need 26 minerals all together, but some of them are only required in tiny amounts. Some minerals, such as lead and selenium, are harmful in large quantities. Dietary supplements can decrease the chance of mineral deficiencies listed in the table below, but should be taken with great care, since overdose can lead to poisoning. Which two minerals are necessary for formation of healthy bones and teeth?

Which of the following is the most common result of prolonged excessive alcohol consumption?