READING 2 ITP

READING 2 ITP

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Multiple Choice

What does the passage mainly discuss?

• The similarities between Earth’s inner core and outer core

• The structure and temperature of Earth’s interior

• When seismic waves were first used to study Earth’s interior

• Why Earth’s solid inner core is surrounded by a molten outer core

Multiple Choice

The word “mere” in line 2 is closest in meaning to

• approximate

• insignificant

• measured

• lengthy

Multiple Choice

According to the first paragraph, most knowledge of Earth’s interior has been gained by studying

• Earth’s gravitational field

• Earth’s magnetic field

• vibrations caused by earthquakes

• material taken from holes drilled into Earth’s crust

Multiple Choice

According to the second paragraph, which of the following statements regarding Earth’s inner core and outer core is true?

• Neither the inner core nor the outer core can be studied using seismic waves.

• The outer core is more solid than the inner core.

• The inner core and the outer core have greatly different temperatures.

• Both the inner core and the outer core probably contain iron.

Multiple Choice

The word “thoroughly” in line 13 is closest in meaning to

• basically

• similarly

• potentially

• completely

Multiple Choice

The word “it” in line 15 refers to

• Earth

• a cool crust

• the molten ball of rock

• the heat

Multiple Choice

The word “manufactured” in line 18 is closest in meaning to

• changed

• combined

• utilized

• made

Multiple Choice

The third paragraph mentions which of the following as one cause of the current high temperature of Earth’s interior?

• The decay of radioactive isotopes

• The movement of elements from Earth’s crust to its interior

• The vibrations that result from movement of Earth’s crust

• The injection of certain organic elements into Earth’s inner core

Multiple Choice

. Look at the terms “seismic waves” (line 5), “earthquakes” (line 6), “magnetic field” (line 12), and “stable elements” (line 18). Which of these terms is defined in the passage?

• seismic waves

• earthquakes

• magnetic field

• stable elements

Multiple Choice

According to the passage, scientists do not understand in detail how

• the crust affects Earth’s internal temperature

• radioactive isotopes cause heat

• Earth’s magnetic field is created

• seismic waves originate