GED Set 7

1.

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?

that the Earth turned that the Earth was in the center of the solar system that the Earth was flat that the Earth was created at the same time as the sun that the Earth could be eclipsed by the sun

2.

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?

because an object at rest remains at rest unless a force acts upon it because the mass of the object is too small to maintain the motion because energy is the ability to do work because gravity is pulling it toward the Earth because energy of motion is converted to heat through friction with air

3.

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?

detonation of an explosive melting ice burning paper the formation of helium on the sun freezing water

4.

Ice floats on water because

ice is less dense than water. water conducts heat better than ice. ice has a lower temperature. heat from the Earth's core travels upward, cooling the bottom first. it needs energy from the sun to melt.

5.

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?

FSH LH progesterone testosterone cholesterol

Congratulations

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