Which of the Following Statements About Earth's Core Is True

question 171

Multiple Choice

Which of the following statements about Earth's core is true?

• A)it is composed primarily of silica.
• B)the inner core is believed to be liquid and the outer core solid.
• C)temperatures in the core reach several hundred degrees.
• D)temperatures and pressures are higher in the inner core than in the outer core.
• E)it is made up of liquid water.

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Definitions:

Level Switch

A device used to detect the level of liquid or solid materials within a container or environment, triggering an action when a certain level is reached.

Temperature Switch

A device that activates or deactivates based on a specific temperature threshold being reached.

Proximity Sensor

A device that detects the presence or absence of a nearby object without physical contact, often using electromagnetic fields, light, or sound.

Photoelectric Sensor

A device that uses light to detect the presence, absence, or distance of an object.