Unit 7 - Materials

Quiz

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Beginner

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+60 XP

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10m

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Unity Technologies

This quiz will assess the knowledge and skills you gained over the course of this Unit 7 on Materials.

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Question 1

In the image below, you can see a jar with a plant inside it. What can you know for sure about the jar’s material?

Select only one

Its Surface Type is set to Transparent

It has a texture assigned to its Base Map

It has a Normal Map

It is using the Standard shader

Question 2

In the image below, there are four apples with slightly different materials, numbered from left to right 1, 2, 3, and 4. Which of the following statements are likely true about the apples’ materials?

Select all correct answers.

Select all correct answers

Apple #1 has an Emissive material

Apple #2 has a high Metallic value

Apple #3 has a high Smoothness value

Apple #4 has a Normal Map applied

Question 3

Which of the following are accurate definitions of material properties?
Select all correct answers.

Select all correct answers

The metallic value property determines how metallic the object will behave around objects marked as magnets. The higher the metallic value, the stronger the attraction will be to magnetic objects

The smoothness value property affects how sharp or blurry the reflections appear

The normal map property modifies the surface normals of the material, simulating fine surface details and adding the illusion of depth and geometry

The base map property sets the base color and/or texture of the surface

Question 4

Which of the following are true about the albedo of a material.

Select two correct answers.

Select all correct answers

The albedo of a material refers to the base color or diffuse color of the material's surface

The albedo of a material represents the inherent color of the material without any influence from lighting or other factors

The albedo of a material defines which part of a material will appear transparent

The albedo of a material refers to how much light it reflects from a Directional Light

Question 5

What is the difference between a shader and a material?

Select only one

A shader is a script that runs as part of the rendering process, and a material is an asset that specifies properties to a shader

A shader is used in physically-based rendering to create photorealistic effects, and a material is used to increase performance if photorealism is not necessary

A shader affects how light appears on an object and a material affects its color

They are actually the same thing

Question 6

What is the difference between a Lit shader and an Unlit shader?

Select only one

A Lit shader adds shadows and reflections according to the light that reaches the object. An Unlit shader ignores the effects of light

A Lit shader allows you to add emissive light to an object so that it can appear to light up. An Unlit shader does not, but using Unlit shaders increases performance

A Lit shader only works with the Universal Render Pipeline. Other render pipelines use Unlit shaders

None of the above

Question 7

Why do materials sometimes appear bright pink in the Unity Editor?

Select only one

It’s common to import a material originally made for a shader that isn’t present in the current project’s render pipeline. To fix, specify a valid shader

Materials appear pink if they are missing a base map or color. To fix, add a color

A material created for one GameObject can’t be applied to another without being configured properly. To fix, adjust the material for each new GameObject

A pink material indicates an error in the shader script. To fix, correct the error or select a different shader

Question 8

What is physically-based rendering?

Select only one

Rendering using shaders that most closely simulate the real-world behavior and properties of light

Rendering in 3D using materials designed to look like real objects

Rendering that uses normal maps and height maps to simulate the physical variations and features of a mesh

Rendering that uses a combination of vertex and fragment shaders to achieve realistic results

Question 9

What is a mesh?

Select only one

The geometric data of a GameObject, consisting of vertices, edges and normals that define the shape of an object in Unity.

A data structure used only for organizing audio sources in a scene.

A component that defines the way light reflects on it.

The texture format used for applying materials to objects.

Question 10

What is the difference between a normal map and a height map?

Select only one

A normal map specifies the direction that a surface is facing at a given point, and a height map specifies how high from the mesh surface to raise the rendered surface

A normal map contains the data of the basic mesh before rendering, and the height map specifies how high from the normal surface to raise the rendered surface

A normal map specifies the normal color to render the mesh, and the height map specifies how high the reflectivity of the surface will be rendered

A normal map specifies the normal properties of the surface, and the height map specifies how those properties change depending on the distance of the surface from the viewer

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