This is test content.
During an investigation in a science class, a teacher held a bar magnet above a pile of steel paper clips on a lab table and then moved the magnet toward the pile. When the magnet was approximately 5 centimeters above the pile, a few paper clips moved off the table toward the bar magnet. The teacher raised the bar magnet so the students could observe that four steel paper clips were attached to each end of the magnet, as shown in the following diagram.
One of the students asked whether magnets affect objects made of all materials. To further investigate the student’s question, an investigation using bar magnets held above objects made of various materials was conducted. The students observed which objects were attracted by the magnets and recorded their observations in a table like the following table.
WHAT MATERIALS ARE ATTRACTED BY MAGNETS? | |
Object | Attracted by Magnet |
---|---|
Wood pencil | No |
Plastic ruler | No |
Steel paper clips | Yes |
Paper cups | No |
Iron nails | Yes |
Copper pennies | No |
Aluminum foil | No |
This is test content.
While investigating magnets, the students observed that when the poles of two magnets were placed close to each other, the magnets either attracted or repelled each other. The students then posed the question: When will the magnets be attracted by each other? The students designed a second investigation where two magnets were pushed slowly toward each other, as shown in the following diagram.
This is a multiple choice question that allows you to select only one option.
Which question did the students most likely want to answer by conducting the “Objects Attracted by Magnets” investigation?
This is a multiple choice question that allows you to select only one option.
A student asked if the steel paper clips could be attracted by a bar magnet from a distance greater than 5 centimeters.
The best way to investigate if the paper clips could be attracted from a distance greater than 5 centimeters is to
This is a test question that allows you to select a spot or region on a graphic.
In the diagram below, the teacher is holding a bar magnet with steel paper clips attached.
Select the arrow in the diagram that identifies the direction of the force of gravity on the paper clips.
This is a question with 2 parts, including a multiple choice question that allows you to select only one option, and, a drag and drop question that allows you to select text and place it in an appropriate answer space.
During the “Magnet Investigation,” the students asked if the bar magnets attracted or repelled each other.
Identify the type of force present in each trial.
Place each type of force into the appropriate box. Each type of force may be used more than once.
Trial | Result |
---|---|
1 | |
2 | |
3 | |
4 |
This is a multiple choice question that allows you to select only one option.
The students’ four trials with the bar magnets were most likely done to investigate the effects of
This is a test question that allows you to enter extended text in your response.
Use the data from the “Objects Attracted by Magnets” investigation to explain why the steel paper clips did not need to be in direct contact to be attracted by the bar magnet the teacher used. In your explanation, be sure to include evidence from the students’ investigation.