C1 Section 4: Practice

Evan, Alex Parten, Maysen, and Alex Holliday are on a field trip to a historical site. They discovered an ancient artifact. Evan believes that the texture of the artifact will provide them with information about it. Can you help them understand what texture refers to in the context of physical properties?

• The state of the mixture

• The strength of the material

• The color of the material

• The feel or appearance of a surface or substance

Evan, Maysen, and Alex P. are working on a school project about different types of materials used in construction. They are having a discussion. Evan thinks uniformity in a material describes how well it resists deformation. Maysen believes it's about how durable the material is. Alex argues it's the material's ability to return to its original position after a load is removed. Ms. Takia, their teacher, asks them, do you know what uniformity actually describes in a material?

• How well the material resists deformation

• How durable the material is

• The material's ability to return to its original position

• How consistent the material is throughout

Alex Parten and Maysen are planning to construct a bridge for their school project. They are discussing the type of material to use. What does the strength of a material determine?

• How durable the material is

• How well the material resists deformation

• The material's ability to return to its original position

• How consistent the material is throughout

Maysen, Alex, and Evan are planning to build a treehouse in their backyard. They are discussing the type of wood to use. Maysen suggests, 'We should consider the elasticity of the wood.' What does she mean by 'elasticity'?

• The wood's ability to return to its original position

• How durable the wood is

• How consistent the wood is throughout

• How well the wood will resist deformation and return to its normal size or shape

Alex H., Evan, and Maysen are in a metalworking shop. They are experimenting with different metals. They want to find out which property determines how easy it is to hammer or roll out metal without breaking it apart. What is this property called?

• How durable the metal is

• The metal's ability to return to its original position

• How well the metal will resist deformation and return to its normal size or shape

• Malleability

Evan, Alex, and Maysen are studying about composite materials. They learned that composites are used in various industries like aviation, construction, and defense. Can you help them understand why composites are preferred in these industries?

• Because they are cheaper

• Because they are easily available

• Because they combine the best qualities of different materials

• Because they are colorful

Alex, Evan, and Maysen are discussing the process of making composites. They learned that fibers are often embedded within another material. Can you help them understand why this is done?

• To make the composite look attractive

• To make the composite lighter

• To make the composite stronger and bring out the best qualities of both materials

• To make the composite cheaper

Maysen, Alex, and Evan are curious about the drawbacks of composites. They learned that the initial cost of research and use of special raw materials can be a major drawback. Can you help them understand why this is considered a drawback?

• Because it makes the composite less durable

• Because it makes the composite less attractive

• Because it increases the initial investment required

• Because it makes the composite heavier

Alex, Evan, and Maysen are studying about emulsions. They learned that emulsions are liquid-liquid colloids that form only in the presence of an emulsifier. Can you help them understand why an emulsifier is necessary for the formation of emulsions?

• Because it makes the emulsion more colorful

• Because it increases the density of the emulsion

• Because it allows the two liquids to mix that would not ordinarily mix

• Because it makes the emulsion cheaper

Maysen, Alex, and Evan are discussing the physical properties of substances. They are curious about the property that determines the color of a substance. Can you help them understand what this property is called?

• Malleability

• Strength

• Color

• Elasticity