2nd Grade Science : 2nd Grade Science
Study concepts, example questions & explanations for 2nd Grade Science
All 2nd Grade Science Resources
Example Questions
Example Question #3 : Use Sources To Show That Some Earth Events Occur Slowly
"series of waves" and "warning"
"massive flooding" and "disturbances"
"extreme devastation"
"sudden" and "very little time or warning"
"sudden" and "very little time or warning"
Volcanic eruptions, landslides, earthquakes, and tsunamis are all events that happen quickly. Events that occur slowly are weathering and erosion, creating new landforms. The keywords that let readers know this event does NOT occur slowly are "sudden" and "very little time or warning."
Example Question #1 : Use Sources To Show That Some Earth Events Occur Slowly
Erosion happens very slowly over time. It is the movement of broken rocks, dirt, and sediment caused by weathering. Which answer choice gives an example of erosion?
Ice freezing in a rock crevice
Plant roots growing into a hillside
Wind breaking a cliffside
A river carrying broken rocks downstream
A river carrying broken rocks downstream
Erosion is the movement of broken materials, and only once answer choice mentions moving the pieces, "A river carrying broken rocks downstream." This example shows that water in the form of a river is moving the broken parts of the material. The other examples are weathering, which is the process of breaking the materials.
Example Question #1 : Investigate Materials And Observable Properties
What are the observable properties that we can use to describe materials?
Color, width, texture, and volume
Length, width, and height
Temperature, weight, density, and volume
Color, texture, hardness, and flexibility
Color, texture, hardness, and flexibility
Observable properties are characteristics or things about materials or objects that we can describe using our five senses. Color, texture, hardness, and flexibility are all things we can determine with our senses.
Example Question #2 : Classification Of Materials
What does the word observable mean?
To be noticed
To serve someone
To go unnoticed
To be served
To be noticed
The term observable means to be noticed or perceived. If something is noticeable, I can touch it, taste it, see it, hear it, or feel it. We can observe the properties of a material and use it to determine what it is or how to classify it.
Example Question #3 : Classification Of Materials
What is another term for materials? Example: I can observe the properties of different materials in the classroom.
Matter
Blankets
Chairs
Desks
Matter
Another term for materials is matter. Matter is what things are made of. All materials, objects, and living things are made of matter.
Example Question #2 : Investigate Materials And Observable Properties
Which object matches the list of observable properties below?
An apple
A basketball
A ping pong ball
A banana
A banana
The observable properties listed give us a clue to what the mystery object is. We know the object needs to be yellow, soft, smooth, and it should not bounce. An apple is typically not yellow, a ping pong ball IS bouncy, and basketballs are generally bouncy and orange, so they are not a match. That leaves a banana which meets all the observable properties.
Example Question #1 : Investigate Materials And Observable Properties
What is Janice describing with the observable properties data table below?
The object that Janice is describing is a die or pair of dice. They are bouncy, hard, smooth, and black and white. The other choices are black and white but don't meet the other observable properties.
Example Question #2 : Investigate Materials And Observable Properties
JR has a sunflower and a rose and wants to investigate their observable properties. Which data table matches the properties of the two objects?
Observable properties are characteristics of an object, person, or material. We use our five senses to make these observations. From the pictures, we can see what the two flowers look like and use this information to help match the correct data table.
Example Question #7 : Classification Of Materials
Cheryl has a ping pong ball and a basketball and wants to investigate their observable properties. Which data table matches the properties of the two objects?
The data table that matches the ping pong ball and basketball need to have observable properties that would describe those objects. Observable properties can be found by using your five senses. A ping pong ball is white, small, round, bouncy, hard, strong, and smooth. A basketball is orange, round, bouncy, hard, strong, and rough.
Example Question #8 : Classification Of Materials
I can investigate materials and use observable properties to describe, classify, and categorize them.
True
False
True
This is a true statement. We can use our five senses to observe things like the color, texture, taste, smell, and hardness of objects. This information allows us to describe objects, classify them, and categorize them.
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