Magnetic Fields 1.3

Multiple Choice

What is the significance of studying magnetic fields and their effects on Earth?

• They help us understand how compasses work and navigation.

• They are only important for scientists studying physics.

• Magnetic fields have no impact on daily life.

• They are only found in laboratory settings.

Open Ended

Can you think of any everyday objects or phenomena that use magnetic force?

Open Ended

How was Barry’s second test different from his first test?

Open Ended

What did you notice about Barry’s evidence?

Multiple Choice

Based on Barry's evidence, what is his claim about strong and weak magnets?

• Strong magnets attract and weak magnets repel.

• Strong magnets repel and weak magnets attract.

• Both strong and weak magnets repel.

• Both strong and weak magnets attract.

Fill in the Blanks

On a bar magnet, the red end is the

pole.

Multiple Choice

Which of the following statements about magnetic poles is correct?

• A magnet has only one pole.

• The north and south poles are at opposite ends of a magnet.

• Both poles are located at the center of a magnet.

• Magnets do not have poles.

Open Ended

What prediction can you make about how two magnets will interact based on their poles?

Open Ended

How can you tell whether two magnets will attract each other, repel each other, or both?

Multiple Choice

Based on Barry's evidence, what happens when strong magnets are released compared to weak magnets?

• Strong magnets move away from each other, weak magnets move toward each other.

• Strong magnets move toward each other, weak magnets move away from each other.

• Both strong and weak magnets move away from each other.

• Both strong and weak magnets move toward each other.

Open Ended

Do you agree or disagree with Barry’s claim that strong magnets repel and weak magnets attract? Why or why not? What evidence supports your answer?

Open Ended

Are there any problems with Barry’s evidence? Explain your reasoning.

Open Ended

How could Barry improve his experiment?

Fill in the Blanks

A

is something that can be changed and may be measured.

Open Ended

Why is it important in science to use the best evidence possible?

Fill in the Blanks

Fill in the blank: Evidence is stronger when the variable being tested is

, so that only one variable is changed at a time.

Multiple Choice

What does the term 'isolate' mean in the context of scientific experiments?

• To combine variables

• To separate or set apart

• To ignore data

• To repeat tests

Multiple Choice

According to the evidence criterion, why is it important to isolate variables during a scientific test?

• It makes the evidence stronger and conclusions more accurate.

• It allows for more variables to be tested at once.

• It speeds up the experiment.

• It reduces the need for repeated trials.

Multiple Select

Which of the following are ways to refute a scientific claim?

• Gather data that contradicts the claim

• Provide stronger evidence

• Ignore the claim

• Repeat the experiment with isolated variables

Open Ended

How can the Evidence Gradient be used to evaluate scientific evidence?

Multiple Choice

What does placing evidence at the top of the Evidence Gradient indicate?

• It is the weakest evidence

• It is the strongest evidence

• It is irrelevant evidence

• It is evidence that supports Barry's claim

Open Ended

Where would you place Barry’s evidence on the Evidence Gradient and why?

Fill in the Blanks

Evidence is considered stronger when only

variable is changed at a time.

Multiple Choice

When evaluating evidence, what makes a piece of evidence stronger according to the instructions?

• It resulted from a test with multiple variables changed

• It resulted from a test that isolated a single variable

• It was the first evidence collected

• It was the evidence that supported Barry's claim

Open Ended

To help show Barry that his claim is inaccurate, which is the strongest piece of evidence to share with him and why?

Open Ended

Which cards were the easiest to evaluate? Which cards were the most difficult? Why?

Multiple Choice

Magnetic fields are responsible for the force that moves a compass needle. What other phenomena can be explained by the presence of magnetic fields?

• The formation of rainbows

• The operation of electric motors

• The growth of plants

• The melting of ice

Open Ended

What questions do you still have about magnetic fields or magnetic force evidence after today's lesson?