Which term describes a surface that curves outward?

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Multiple Choice

Which term describes a surface that curves outward?

Explanation:
Convex describes a surface that curves outward. Think of the outside of a sphere or a dome—the surface bulges away from the interior. A concave surface curves inward, like the inside of a bowl. Focus is a point related to where light rays meet after reflection or refraction, and amplitude is a measure of a wave’s height, not about surface shape. So the term for outward-curving is convex.

Convex describes a surface that curves outward. Think of the outside of a sphere or a dome—the surface bulges away from the interior. A concave surface curves inward, like the inside of a bowl. Focus is a point related to where light rays meet after reflection or refraction, and amplitude is a measure of a wave’s height, not about surface shape. So the term for outward-curving is convex.

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