2nd Grade Science : Physical Science
Study concepts, example questions & explanations for 2nd Grade Science
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Example Questions
Example Question #1 : Analyze Data From Different Materials
Which of the following properties are most important when choosing a paper towel to clean up a spill?
Flexibility
Hardness
Color
Absorbency
Absorbency
Paper towels are used to clean up spills, and no one wants to waste money on something that doesn't work. The material needs to clean up the mess quickly and efficiently. The most important property for a paper towel is its absorbency. If the paper towel is not absorbent, it will not clean up the mess.
Example Question #51 : Physical Science
Ms. Dube's class was testing the strength of different types of adhesive products to determine which was best for holding up classroom posters. She split the groups up and gave them four products and four signs. Their results are in the data table below.
Which material would be the best for Ms. Dube to use in her classroom to hang posters?
Tape
Liquid Glue
Glue Stick
Sticky Putty
Sticky Putty
Materials can be tested for a specific purpose or quality. The data from that test can be analyzed to determine which material is preferred for a job or task. Ms. Dube's class discovered that sticky putty held the poster up to the wall for the longest amount of time, so it would be the best choice for an adhesive in the classroom.
Example Question #52 : Physical Science
Ms. Dube's class was testing the strength of different types of adhesive products to determine which was best for holding up classroom posters. She split the groups up and gave them four products and four signs. Their results are in the data table below.
Which material would be the worst for Ms. Dube to use in her classroom to hang posters?
Glue Stick
Tape
Sticky Putty
Liquid Glue
Liquid Glue
The liquid glue would be the worst adhesive product for hanging posters in Ms. Dube's classroom. The liquid glue only held the poster in place for three minutes before it fell off the wall. This material is suited for other purposes, but based on this data, holding signs on the wall is not one of them.
Example Question #4 : Analyze Data From Different Materials
Hayley is baking a cake for the school bake sale. She is trying to choose a frosting flavor and wants to make something that is a bit healthier. She compares the amount of sugar in each frosting and wants to choose the one with the least sugar. Which frosting should she choose?
Strawberry Sunset
Chocolate Thunder
Orange Dream
Vanilla Blast
Strawberry Sunset
After analyzing the sugar content of each frosting, Hayley wants to choose the frosting with the least amount of sugar. Strawberry Sunset has only 15 grams of sugar, which is the lowest amount of the four choices. If she wants a cake that is lower in sugar, she should use the strawberry frosting.
Example Question #1 : 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 evidence-based statement about Jessica's project?
This is an example of creating something new out of the smaller pieces of a larger object.
Robots can only be created out of metal.
Jessica's robot sounds very pretty and creative.
This is an example of a simple project that anyone can do with these materials from their house.
This is an example of creating something new out of the smaller pieces of a larger object.
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 personal opinion rather than evidence-based, and others are incorrect statements. "This is an example of creating something new out of the smaller pieces of a larger object." is a true and accurate statement and based on evidence from the information provided.
Example Question #1 : Creation Of New Objects From Existing Objects
Observe the photo below. Which answer choice is constructing an evidence-based statement based on observation?
Building blocks are a fun toy to play with and allow children to work together.
Building blocks can be made into anything you can imagine, but once they are built, they cannot be taken apart again.
Building blocks are individual pieces but can be put together and taken apart to make something new.
Building blocks can only be made into the design they were constructed for.
Building blocks are individual pieces but can be put together and taken apart to make something new.
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, "Building blocks are individual pieces but can be put together and taken apart to make something new." This is something that could be tested and also has no personal thoughts or opinions included.
Example Question #2 : Construct An Evidence Based Account Of An Observation
Which statement is based on opinion instead of evidence?
Artists love to make mosaic pieces of artwork.
Pieces of mosaic artwork are made of tile, glass, ceramic, and other pieces of material.
Mosaic pieces of artwork are examples of breaking up larger pieces and putting them together to make something new.
Mosaic art pieces can come in multiple colors, patterns, and designs.
Artists love to make mosaic pieces of artwork.
Personal opinion statements will include thoughts and feelings from the author. "Artists love to make mosaic pieces of artwork." is a statement that provides for individual ideas and makes a sweeping statement that "artists love to make mosaics." This is not something that can be proved scientifically and is just one person's opinion.
Example Question #1 : Creation Of New Objects From Existing Objects
The following statement is based on evidence. " I observed an artist ripping up a newspaper and dipping it into a mixture of liquids. She then laid it carefully around an inflated balloon and left it to harden. When she finished, she popped the balloon and peeled it off the newspaper. It left behind a solid bowl."
False
True
True
This statement is accurate and based on evidence. There is no personal opinion or description of the bowl besides scientific observation. Had the author included information like "the bowl was beautiful" or "the artist was very talented." then personal thoughts would be integrated and no longer allow this to be completely evidence-based on observation.
Example Question #3 : Construct An Evidence Based Account Of An Observation
Mike uses building blocks to make a racecar, track, and bleachers for viewers. He tears it down and decides to make a castle and drawbridge for his next creation.
Based on this information, Mike is breaking apart a whole object and using the pieces to make something new.
True
False
True
Mike is indeed using pieces of a whole to create something new. He has broken the racetrack, car, and bleachers up, and is using the same blocks to make a building. Disassembling something is possible to create something new.
Example Question #2 : Creation Of New Objects From Existing Objects
Which observational data is based on evidence and NOT an opinion?
I saw Sawney go for a run every morning at 9:00 AM while I was out watering my plants in March.
Half of the basketball team wears blue sneakers. Our team is losing this season, so we need to change our shoe colors.
Lexi thinks she is a better bowler when she uses the pink ball, but she likes the purple ball the best.
Jack measured his tomato plant in his garden every day. It grew to four feet tall over the summer. It is his favorite plant.
I saw Sawney go for a run every morning at 9:00 AM while I was out watering my plants in March.
Observational data is information that can be collected with our five senses. It the account must be based on evidence, there should be data provided and no mention of personal thoughts, feelings, or opinions. "I saw Sawney go for a run every morning at 9:00 AM while I was out watering my plants in March." This statement using factual evidence and does not include personal opinion.
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