Magnetic Forces, Fields & Distance — Practice · Grade 6 Science
Chapter: Electricity, Magnetism & LightWhat this practice covers
By the end of Magnetic Forces, Fields & Distance you should be able to:
- I can name which materials are magnetic and design a test to check a sample.
- I can describe a magnetic field and how its strength changes with distance.
- I can explain how an electromagnet differs from a permanent magnet.
8 questions, written answer and multiple choice, each with a worked explanation.
Vocabulary used: magnetic field, pole, evidence, system boundary, uncertainty.
Problem 1
Answer and explanation
No. They belong to different models; magnetic pole labels are not net electric charge labels.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 2
Answer and explanation
It contributes to the local magnetic field with which the compass aligns.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 3
Answer and explanation
No. The force may be too small to overcome friction or be detected by the procedure.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 4
Answer and explanation
A current-associated magnetic effect in the stated setup, with its detection limits; it does not establish every current strength or construction.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 5
Answer and explanation
The recorded holding count decreases as gap increases under this method. At 2 cm the mean is 5 clips and the range 4–6. Clip count is a practical proxy, not force in newtons, and these three distances do not establish an exact mathematical law or prove the field stops beyond 3 cm.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 6
Answer and explanation
No. Metals differ in magnetic response, and the method has limits. Attraction is not a universal test for all metal identity.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 7
- Every metal must be strongly attracted by a magnet.
- magnetic field: A representation of magnetic interaction around magnets or electric currents.
- Dividing a bar magnet creates an ordinary magnet with only one pole.
- One illustrative result establishes every real condition and needs no further evidence.
Answer and explanation
magnetic field: A representation of magnetic interaction around magnets or electric currents.
A representation of magnetic interaction around magnets or electric currents. The recorded holding count decreases as gap increases under this method. At 2 cm the mean is 5 clips and the range 4–6. Clip count is a practical proxy, not force in newtons, and these three distances do not establish an exact mathematical law or prove the field stops beyond 3 cm.
Problem 8
- Dividing a bar magnet creates an ordinary magnet with only one pole.
- Every metal must be strongly attracted by a magnet.
- pole: A north or south magnetic orientation region in the simple magnet model.
- One illustrative result establishes every real condition and needs no further evidence.
Answer and explanation
pole: A north or south magnetic orientation region in the simple magnet model.
A north or south magnetic orientation region in the simple magnet model. The recorded holding count decreases as gap increases under this method. At 2 cm the mean is 5 clips and the range 4–6. Clip count is a practical proxy, not force in newtons, and these three distances do not establish an exact mathematical law or prove the field stops beyond 3 cm.