2nd Grade Science : Physical Science
Study concepts, example questions & explanations for 2nd Grade Science
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Example Questions
Example Question #5 : Construct An Evidence Based Account Of An Observation
Jessica cut up a large piece of paper and glued it to a poster board and made it into the shape of a robot. She added cut up tinfoil, broken beads, and small pieces of tile for decoration.
Which answer choice is an opinion-based statement about Jessica's project?
While cutting up the tinfoil, Jessica cut her finger, and it hurt very badly.
Twelve of the beads that Jessica used were red, and fifteen were orange.
Jessica's robot was one-foot tall and six-inches wide.
The small pieces of tiles used to be whole before they were broken.
While cutting up the tinfoil, Jessica cut her finger, and it hurt very badly.
Jessica created a robot picture out of broken materials and pieces of something larger broken down into smaller bits. Some of the answer choices are evidence-based, while one is a personal opinion. "While cutting up the tinfoil, Jessica cut her finger, and it hurt very badly." includes a personal opinion. It may be factual that she cut her finger, but the degree of pain felt is an opinion and subjective for each person.
Example Question #6 : Construct An Evidence Based Account Of An Observation
Look at the photo below. Which answer choice is constructing an evidence-based statement based on observation?
These blocks are all equal size and the same shape. They look fun to play with.
These blocks are to build a rocket ship. Once the ship is created, it cannot be taken apart.
There are blocks of many colors in this pile. They can be used to build many different things.
There blocks of different sizes and shapes in this pile. I only like using the red blocks.
There are blocks of many colors in this pile. They can be used to build many different things.
Creating an evidence-based statement or account means that no personal opinion or thought can be included, and it must be able to be supported by an investigation or experiment. The answer choice that is based on evidence and observation is, "There are blocks of many colors in this pile. They can be used to build many different things." This is something that could be tested and also has no personal thoughts or opinions included.
Example Question #7 : Construct An Evidence Based Account Of An Observation
Which statement is based on opinion instead of evidence?
Mosaics can be made of materials other than tiles.
Small pieces of materials can be put together to make something new.
Mosaic artwork looks best when made in greens like the piece in the photo.
Large tiles can be broken into smaller pieces to make mosaic artwork.
Mosaic artwork looks best when made in greens like the piece in the photo.
Personal opinion statements will include thoughts and feelings from the author. "Mosaic artwork looks best when made in greens like the piece in the photo." is a statement that talks about preferences and individual subjective thoughts. This is not something that can be proved scientifically and is just one person's opinion.
Example Question #3 : Construct An Evidence Based Account Of An Observation
The following statement is based on evidence. "Kaitlyn smashed colored tiles with a hammer and collected the broken pieces. She picked her favorite color tiles to make a portrait of her mother. She thinks this will be her best artwork ever and is excited to share it for Mother's Day."
False
True
False
This statement is not based solely on evidence. There are personal thoughts and information included. Kaitlyn mentions her favorite color that this will be her best artwork, and her feelings about excitement; these are all opinions and not factual, evidence-based statements.
Example Question #11 : Creation Of New Objects From Existing Objects
Jackie says that she can take a piece of paper, cut it into tiny shapes, and put it back together again to make something new. Her friend Amanda said that isn't possible and once the paper has been cut it is ruined.
Who is correct and why?
There is not enough information to make a decision.
Jackie; larger objects can be disassembled or broken apart to form new things
Neither; both Jackie and Amanda are wrong
Amanda; cutting the paper destroys it, and it cannot be put back together or turned into something new
Jackie; larger objects can be disassembled or broken apart to form new things
In this scenario, Jackie is correct, and Amanda is wrong. Objects can be disassembled or broken apart to form new objects. In the case of a piece of paper, it is much like a puzzle, the pieces can be put back together to reform the paper, or they can be formed into something new by changing their order.
Example Question #12 : Creation Of New Objects From Existing Objects
Which of these photos is an example of disassembling something into small places to make something new?
The photo of the mosaic artwork is a perfect example of making something new out of the small pieces of another object. Artists will take small pieces of tile, glass, or other materials and put them together to make a new creation. It is possible to disassemble something and create something new!
Example Question #1 : Disassemble An Object Made Of Small Pieces Into A New Object
Tabitha's teacher gave her five snapping cubes and told her to create at least ten different shapes using only those cubes. How is it possible to make so many different designs?
It is not possible; her teacher is giving her an impossible task.
Tabitha can just make one shape and then turn it around and tell her teacher it is different.
Objects can be disassembled, and the parts can be used to make something new.
Snapping cubes are flexible so you can bend them.
Objects can be disassembled, and the parts can be used to make something new.
Tabitha's teacher has not given her an impossible task. This is something that can be done because larger objects can be broken down into smaller pieces and then be made into something new. Tabitha could take the cube apart and put the cubes back together in a different order, which would make something unique.
Example Question #13 : Creation Of New Objects From Existing Objects
Which photo represents whole objects being broken down into smaller pieces to make something new?
The photo that represents an object being broken down into smaller pieces to make something new is the pizza. The individual ingredients are added to make the entire pizza. Olives are cut up, tomatoes crushed, peppers cut, etc. to be added onto the crust and baked. This is an example of something new being created from the smaller pieces of objects being broken up.
Example Question #5 : Disassemble An Object Made Of Small Pieces Into A New Object
A new object can be created using the pieces of something else.
False
True
True
The statement presented in the question is true. You can take an object, break it into small pieces, and then put it back together to create something new. If you were to build a castle with blocks, you could knock it down and build something else instead. This is a simple example of making something new out of the pieces of something else.
Example Question #3 : Disassemble An Object Made Of Small Pieces Into A New Object
Once an object has been disassembled it's parts are no longer usable.
True
False
False
The statement presented in the question is false. You can take an object, break it into small pieces, and then put it back together to create something new. If you were to build a castle with blocks, you could knock it down and build something else instead. This is a simple example of making something new out of the pieces of something else.
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