Earth Magnetic Field worksheet - Free Printable

Let’s go step by step to answer each part of the worksheet.

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A. Where is the magnetic field stronger?

The Earth’s magnetic field is strongest near the magnetic poles — that’s close to the North and South Poles of the planet. The field lines are closest together there, which means the force is stronger. Near the equator, the field lines are more spread out, so the field is weaker.

✔ So, the magnetic field is stronger at the poles.

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B. Which is the strongest magnetic field?

This question might be a little tricky because it doesn’t give options. But in context, since we’re talking about Earth’s magnetic field, the “strongest” part of it is still at the magnetic poles, as explained above.

If this were comparing different magnets or planets, we’d need more info — but here, within Earth’s own field, the poles have the strongest field.

✔ So again, the strongest magnetic field (on Earth) is at the poles.

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C. What is the metal in the Earth’s core?

Looking at the diagram, it shows:
- Crust (outer layer)
- Mantle
- Liquid outer core
- Solid inner core

Scientists know that the Earth’s core is made mostly of iron and some nickel. The solid inner core is mainly iron, and the liquid outer core is also iron with nickel and other elements.

✔ So, the main metal in the Earth’s core is iron.

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D. Choose the Correct Answer

We see a picture of Earth with a bar magnet inside it, showing magnetic field lines going from one end to the other.

In reality:
- The North Pole of the magnet inside Earth points toward the geographic South Pole.
- The South Pole of the magnet inside Earth points toward the geographic North Pole.

But wait — let’s think carefully!

Actually, what we call the “North Magnetic Pole” on Earth is where the *south* pole of the imaginary bar magnet inside Earth is located — because opposite poles attract. A compass needle’s north pole points to Earth’s magnetic north, which means that location must actually be a *magnetic south* pole.

So in the diagram:

→ The top of the bar magnet (pointing up toward Canada/Arctic) is labeled S → that’s the South pole of the magnet → which corresponds to Earth’s Magnetic North Pole (where compasses point).

→ The bottom of the bar magnet (pointing down toward Antarctica) is labeled N → that’s the North pole of the magnet → which corresponds to Earth’s Magnetic South Pole.

Also, the field lines come out of the North pole of the magnet and go into the South pole — just like regular magnets.

So for the three blank boxes next to the diagram:

Top box → pointing to the S end of the magnet → that’s Earth’s Magnetic North Pole

Middle box → pointing to the middle of the magnet → probably meant to label the Earth’s axis or just the center — but looking at typical diagrams, sometimes they ask for “Geographic North”, etc. Wait — let’s recheck.

Actually, looking at standard labeling:

Usually, in such diagrams:

- Top line → points to the Magnetic North Pole (which is near Geographic North, but not exactly same)
- Middle line → often points to the Equator or center — but here it seems to point to the side of Earth, maybe indicating direction?
Wait — perhaps the three blanks are meant to label:

1. The top arrow → points to the South pole of the internal magnet → which creates the Magnetic North Pole on surface
2. The middle arrow → points to the side of Earth — maybe indicating the direction of magnetic field? Or perhaps it's misaligned.
Actually, looking again — the三条 lines are all pointing to different parts:

First line → points to the top tip of the magnet (labeled S) → that’s the Magnetic North Pole of Earth

Second line → points to the middle of the magnet / center of Earth → could be “Center of Earth” or “Axis”

Third line → points to the bottom tip of the magnet (labeled N) → that’s the Magnetic South Pole of Earth

But in many school worksheets, they simplify:

They say:

→ The end of the magnet pointing north (geographically) is called the South pole of the magnet (because it attracts the north pole of a compass)

→ So labels should be:

Top box: Magnetic North Pole
Middle box: Earth’s Axis or Center — but if only 3 choices and no options given, likely:

Actually, common answers for such diagrams:

Often, the three blanks are for:

1. Magnetic North Pole
2. Equator (or sometimes “Direction of Field”)
3. Magnetic South Pole

But since the arrows point specifically to:

- First arrow → top of magnet → Magnetic North Pole
- Second arrow → side of Earth → possibly “Geographic Equator” or just “Surface” — but better to match standard teaching

Wait — I recall now: In many textbooks, when they show this diagram, the three labels are:

→ Top: Magnetic North Pole
→ Middle: Geographic North Pole (but that’s not accurate — they’re offset)
Hmm… actually, let’s think differently.

Perhaps the three blanks correspond to:

From top to bottom:

1. The point where field lines enter Earth → that’s the Magnetic South Pole? No — field lines exit North pole and enter South pole.

Standard rule: Magnetic field lines emerge from North pole of magnet and enter South pole.

In the diagram, field lines are coming OUT of the bottom (N-labeled end) and going INTO the top (S-labeled end). That matches: N pole emits field lines, S pole receives them.

So:

- Bottom of magnet = North pole of magnet → located near geographic South → so that’s Earth’s Magnetic South Pole
- Top of magnet = South pole of magnet → located near geographic North → so that’s Earth’s Magnetic North Pole

Therefore:

Top blank (pointing to S-end): Magnetic North Pole
Middle blank (pointing to side): Maybe “Direction of Magnetic Field” or “Field Lines” — but since it’s multiple choice style without options, perhaps it’s expecting:

Actually, looking at similar worksheets online, often the three blanks are:

1. Magnetic North Pole
2. Geographic North Pole
3. Magnetic South Pole

But in this diagram, the middle arrow points to the side of Earth, not the top. Hmm.

Alternatively, maybe:

Top: South Pole of Magnet
Middle: Earth’s Rotation Axis
Bottom: North Pole of Magnet

But the instruction says “Choose the Correct Answer” — implying there are predefined choices, but none are shown. Since this is a text-based response, I’ll assume based on standard knowledge.

Most logical assignment:

→ Arrow pointing to top of magnet (S): This represents the Magnetic North Pole of Earth
→ Arrow pointing to center/side: Could be ignored or labeled “Core” — but likely not needed
→ Arrow pointing to bottom of magnet (N): This represents the Magnetic South Pole of Earth

But to fit three blanks, and since the middle one points to the equatorial region, perhaps:

Common simplified version:

Blank 1 (top): Magnetic North Pole
Blank 2 (middle): Equator
Blank 3 (bottom): Magnetic South Pole

Yes, that makes sense for elementary level.

✔ Final labeling for D:

Top box: Magnetic North Pole
Middle box: Equator
Bottom box: Magnetic South Pole

*(Note: Some curricula may vary slightly, but this is the most widely accepted simplification for students.)*

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Final Answer:

A. At the poles
B. At the poles
C. Iron
D. Top: Magnetic North Pole; Middle: Equator; Bottom: Magnetic South Pole