2nd Grade Science : Physical Science
Study concepts, example questions & explanations for 2nd Grade Science
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Example Questions
Example Question #3 : Classify Materials By Observable Properties
Which answer choice could be classified as "Item 4"?
When looking at items or materials, we can classify them based on their observable properties. If we look at the different descriptions of all four items and then think about a tennis ball, some similarities can be found between item 4 and a tennis ball. They can be described with the same properties, so they fall into the same category.
Example Question #12 : Classification Of Materials
Ivy is trying to decide which item is most like a fuzzy refrigerator magnet based on its properties. Looking at the data table, which item is the best match?
Item 1
None of the items
Item 3
Item 2
Item 3
When looking at items or materials, we can classify them based on their observable properties. If we look at the different descriptions of all three items and then think about a baseball, some similarities can be found between item 2 and a baseball. They can be described with the same properties, so they fall into the same category.
Example Question #4 : Classify Materials By Observable Properties
Observable properties classify all of the items listed. Which category would Montel put a notebook in based on its features?
All of the categories
Category 3
Category 1
Category 2
Category 1
Observable properties are characteristics of an object or material that can be gathered using the five senses. When looking through each category, there is a common property that groups the items. In "Category 3," all of the things are brown, so they are classified by color. In "Category 2," all of the items are round, so they are sorted by shape. In "Category 1," all of the things are square or rectangular, so they are also categorized by shapes. The category that a notebook would best fit in is "Category 1".
Example Question #13 : Classification Of Materials
Observable properties classify all of the items listed. Which category would Rishi put a green gummy bear in based on its properties?
Category 2
None of the categories
Category 3
Category 1
None of the categories
A green gummy bear would not fit into any of the categories based on its observable physical characteristics. "Category 1" is all rectangular or square objects, "Category 2" are round items, and "Category 3" is all brown items. A green gummy bear would need to be placed in a new category.
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, hard, and smooth
Round, blue, hard, and smooth
Round, green, soft, rough
Round, green, hard, and smooth
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?
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?
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 #4 : 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
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 #5 : Describe Materials By Observable Properties
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.
To do things correctly
Places where people live
Items that are owned
Characteristics or features
Characteristics or features
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 #21 : Classification Of Materials
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?
Irregular shape, hard, rough, and smelled fruity
Round, red, hard, and smooth
Irregular shape, soft, white, and smelly
Square, hard, green, and bouncy
Irregular shape, soft, white, and smelly
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.
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