# 2nd Grade Science : Describe materials by observable properties

## Example Questions

### Example Question #1 : Describe Materials By Observable Properties

Sam put a whole watermelon in a box. She described it to her sister using observable properties, and her sister had to guess what it is. Which set of properties matches the watermelon?

Square, green, hard, rough

Round, green, soft, rough

Round, green, hard, and smooth

Round, blue, hard, and smooth

Round, green, hard, and smooth

Explanation:

An observable property is something that describes an item or material and is gathered using the five senses. A whole watermelon is round, green, hard, and smooth. Someone could touch and see an entire watermelon and find all of these properties are true.

### Example Question #2 : Describe Materials By Observable Properties

Brittany has a game to play with her friends. She will describe a material or object by its observable properties, and they have to guess what she is thinking of.

"The object I am thinking of is round, smooth, hard, and reddish in color." Which object is she thinking about?

Explanation:

The object that Brittany is thinking about has to be round, reddish in color, hard, and smooth. The yarn is soft, the baseball is white, and the mushroom is rough with a bottom that is not round, so none of these items meet ALL of the properties. The floating ball is red, hard, smooth, and round, so it meets all of the characteristics listed. Observable properties are a way to describe an item or material and gather information about the world around you.

### Example Question #3 : Describe Materials By Observable Properties

Angie has a game to play with her friends. She will describe a material or object by its observable properties, and they have to guess what she is thinking of.

"The object I am thinking of is round, smooth, soft, and green." Which object is she thinking about?

Explanation:

Angie is using observable properties to describe an object. Observable properties are characteristics describing an item or material gathered with our five senses. The only item that completely meets all of the same features is the peas. The egg is hard, the green beans are not round, and the chickpeas are tan.

### Example Question #2 : Describe Materials By Observable Properties

The properties of materials include features such as color, size, and shape, whether they are rough or smooth, shiny or dull, hard or soft, and flexible or stiff.

False

True

True

Explanation:

This is a true statement. Properties of materials can be determined by using the five senses. Once the features of an item have been identified, the items can be described, classified, or sorted by this information.

### Example Question #21 : Classification Of Materials

What does the term properties mean in science context? Example: I can describe materials by their properties. A rock is hard, grey, smooth, not bouncy, and is not flexible.

Places where people live

To do things correctly

Items that are owned

Characteristics or features

Characteristics or features

Explanation:

Properties are characteristics or features used to describe an item, object, or material. There are measurable and observable properties for all objects. Measurable properties are things like mass, weight, height, and volume. A tool must be used to find a measurable property. An observable property is found by using the five senses.

### Example Question #6 : Describe Materials By Observable Properties

Bella put a dirty sock in a box. She described it to her sister using observable properties, and her sister had to guess what it is. Which set of features matches the sock?

Round, red, hard, and smooth

Irregular shape, hard, rough, and smelled fruity

Irregular shape, soft, white, and smelly

Square, hard, green, and bouncy

Irregular shape, soft, white, and smelly

Explanation:

An observable property is something that describes an item or material and is gathered using the five senses. A dirty sock is an irregular shape, soft, white, and smelly. Someone could touch, smell, and see a dirty sock and find all of these properties are true.

### Example Question #7 : Describe Materials By Observable Properties

Jorah has a game to play with his friends. He will describe a material or object by its observable properties, and they have to guess what he is thinking of.

"The object I am thinking of is rectangular, bumpy, hard, and green in color." Which object is he thinking about?

Explanation:

The object that Jorah is most likely describing is the building block. It is green, bumpy on top, hard, and a rectangular shape. These observable properties can be used to describe the item in detail. Observable properties are determined with the five senses.

### Example Question #8 : Describe Materials By Observable Properties

Daria got a new kitten. She was on the phone with her grandmother and wanted to describe it using his observable properties. Which list best matches the description of the kitten?

Tan, brown, soft, bouncy, squishy, and cold

Tan, brown, hard, bouncy, and cold

Brown, soft, orange, warm, not bouncy, and magnetic

Tan, brown, soft, not bouncy, squishy, and warm

Tan, brown, soft, not bouncy, squishy, and warm

Explanation:

Daria can describe her kitten using observable properties. Observable properties are characteristics of an item, person, material, or even animal that are collected using the five senses. This kitten is tan, brown, soft, not bouncy, squishy, and warm. Using the senses of touch and sight, these features can be determined.

### Example Question #9 : Describe Materials By Observable Properties

Zara has a game to play with her friends. She will describe a material or object by its observable properties, and they have to guess what she is thinking of.

"The object I am thinking of is long, curved, smooth, soft, and green." Which object is she thinking about?

Explanation:

Angie is using observable properties to describe an object. Observable properties are characteristics describing an item or material gathered with our five senses. The only thing that completely meets all of the same features is the green beans. The egg is hard, the peas are round, and the chickpeas are tan.

### Example Question #31 : Physical Science

Measurable properties are an item's color, size, and shape, whether they are rough or smooth, shiny or dull, hard or soft, and flexible or stiff.