An Open Universe

question 46

Multiple Choice

An open universe

• A) has a negative curvature.
• B) has zero curvature.
• C) has a positive curvature.
• D) is finite.
• E) has a center.

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Definitions:

Dilute HCl

A solution of hydrochloric acid and water that is less concentrated than the acid's pure form, often used in chemical reactions and tests.

Silicate Mineral

Refers to minerals composed of silicate groups, which are compounds of silicon and oxygen, often forming the majority of the Earth's crust.

Wavy Lines

Irregular, zigzagging patterns often found in nature, art, or graphical representations, symbolizing movement or variability.

No Cleavage

A term used in mineralogy to describe minerals that do not exhibit a tendency to break along flat, smooth surfaces.