HiSET Science Practice Test

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The five Great Lakes make up 95% of the United States’ fresh water supply. The Great Lakes are estimated to have been formed at the end of the last glacial period (about 10,000 years ago), when the Laurentide ice sheet receded. The retreat of the ice sheet left behind a large amount of meltwater. Today, chemicals, pesticides, and herbicides from the agriculture industry and toxic wastes from factories have polluted the Lakes. Higher temperatures and reduced precipitation have contributed to lower water levels, leading to costly efforts to dig out harbors and to open shipping lanes. A hard freeze that affected Lakes Superior, Huron, and Erie during the winter of 2003 forced ships carrying industrial products to delay shipments or risk being trapped in the 2-foot-thick ice. A scientist who believes that the dropping water levels in the Great Lakes are the result of global warming would be most likely to study ways to reduce

Correct! Wrong!

Two species of animals with a similar appearance live in the same habitat but do not compete for food. This is because they most likely

Correct! Wrong!

The five Great Lakes make up 95% of the United States’ fresh water supply. The Great Lakes are estimated to have been formed at the end of the last glacial period (about 10,000 years ago), when the Laurentide ice sheet receded. The retreat of the ice sheet left behind a large amount of meltwater. Today, chemicals, pesticides, and herbicides from the agriculture industry and toxic wastes from factories have polluted the Lakes. Higher temperatures and reduced precipitation have contributed to lower water levels, leading to costly efforts to dig out harbors and to open shipping lanes. A hard freeze that affected Lakes Superior, Huron, and Erie during the winter of 2003 forced ships carrying industrial products to delay shipments or risk being trapped in the 2-foot-thick ice. Which process originally contributed most to the amount of water contained in the Great Lakes?

Correct! Wrong!

The timeline below depicts when the Trianis Volcano has erupted. Geologists discuss "recurrence intervals" which represent an average time between past events. The black circles represent when the Trianis Volcano had a confirmed eruption. The triangle represents a suspected but not confirmed eruption. Which of the following events follows a predictable timeline similar to the volcanic eruptions.

Correct! Wrong!

The timeline below depicts when the Trianis Volcano has erupted. Geologists discuss "recurrence intervals" which represent an average time between past events. The black circles represent when the Trianis Volcano had a confirmed eruption. The triangle represents a suspected but not confirmed eruption. Which of the following statements represents an hypothesis rather than a fact?

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Ancestors of the giant panda had rounded paws with five very short toes. Today, the giant panda has a sixth toe, often referred to as a thumb, even though it develops from a wrist bone. This unique thumb is an adaptation that allows the panda to easily hold and eat bamboo shoots. The presence of the giant panda’s thumb is most likely the result of

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The timeline below depicts when the Trianis Volcano has erupted. Geologists discuss "recurrence intervals" which represent an average time between past events. The black circles represent when the Trianis Volcano had a confirmed eruption. The triangle represents a suspected but not confirmed eruption. The timeline shows that volcanic eruptions tend to happen at regular intervals. According to this timeline, in which year would a volcanic eruption also have been expected?

Correct! Wrong!

The generalized cross section below shows the sedimentary rock layers at Niagara Falls in western New York State. Which rock layer appears to be most resistant to weathering and erosion?

Correct! Wrong!

The five Great Lakes make up 95% of the United States’ fresh water supply. The Great Lakes are estimated to have been formed at the end of the last glacial period (about 10,000 years ago), when the Laurentide ice sheet receded. The retreat of the ice sheet left behind a large amount of meltwater. Today, chemicals, pesticides, and herbicides from the agriculture industry and toxic wastes from factories have polluted the Lakes. Higher temperatures and reduced precipitation have contributed to lower water levels, leading to costly efforts to dig out harbors and to open shipping lanes. A hard freeze that affected Lakes Superior, Huron, and Erie during the winter of 2003 forced ships carrying industrial products to delay shipments or risk being trapped in the 2-foot-thick ice. A student receives an assignment to research and write a report on a nonrenewable resource of the Great Lakes region. Which of the following resources would be an appropriate choice?

Correct! Wrong!

The diagram below shows various ecological communities that occupied an area over a period of 300 years. Which statement best describes the diagram?

Correct! Wrong!

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