Science Review Grade 4 interactive worksheet - Free Printable

Let’s solve this step by step.

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Part 1: Label the Earth Layers

We are given four words:
→ inner core
→ mantle
→ crust
→ outer core

Looking at the diagram of Earth’s layers (from center outward):

- The innermost layer (center) is the inner core → that’s label #2
- Around it is the outer core → that’s label #3
- Then comes the thick middle layer called the mantle → that’s label #1
- The very thin outer layer we live on is the crust → that’s label #4

So:

1. mantle
2. inner core
3. outer core
4. crust

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Part 2: Write the names of the four outer planets

The solar system has 8 planets. The first four (closest to Sun) are inner planets: Mercury, Venus, Earth, Mars.

The next four are the outer planets: Jupiter, Saturn, Uranus, Neptune.

In the image, they’re shown in order from left to right after Mars:

→ Jupiter (already labeled)
→ Saturn (labeled)
→ Uranus (labeled)
→ Neptune (labeled)

But the question asks us to write their names under the blanks with starting letters:

M _ _ _ _ _ _ → That must be Mars? Wait — no! Mars is an *inner* planet. Let’s read carefully.

Actually, looking again — the instruction says: “Write the names of the four outer planets.” And below the planet images, there are blanks with starting letters:

Left side:
M _________
M _________

Right side:
V _________
E _________

Wait — that doesn’t match the outer planets. Outer planets start with J, S, U, N.

Hmm… maybe there’s a mistake in how the blanks are arranged? Or perhaps it’s asking for something else?

Wait — look again at the image layout. Under the planet pictures, there are two columns of blanks:

Left column:
M _________
M _________

Right column:
V _________
E _________

But those don’t match the outer planets. Unless... maybe it’s a trick? Or misprint?

Actually — let’s re-read: “Write the names of the four outer planets.”

And the outer planets are: Jupiter, Saturn, Uranus, Neptune.

None of them start with M, V, or E.

Unless… wait — maybe the blanks are not aligned with the starting letters shown? Or perhaps the letters are hints for other things?

Hold on — maybe the “M”, “V”, “E” are typos or misplacements? Because in the planet row above, we have:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

The outer planets are the last four: Jupiter, Saturn, Uranus, Neptune.

So regardless of the blank labels, we should write:

Jupiter
Saturn
Uranus
Neptune

But the blanks have starting letters: M, M, V, E — which don’t fit.

Wait — perhaps the student is supposed to ignore the starting letters and just write the four outer planet names? Or maybe the starting letters are for something else?

Alternatively — could it be that the blanks are meant to be filled with the full names, and the letters are just placeholders? For example:

M _________ → Maybe “Mars”? But Mars is inner.

This is confusing.

Let me think differently. Perhaps the worksheet has a formatting error. In many worksheets, when they say “write the names of the four outer planets,” they expect:

Jupiter
Saturn
Uranus
Neptune

Even if the blanks have wrong starting letters.

Maybe the “M”, “V”, “E” are actually for the inner planets? But the instruction clearly says “outer planets”.

Another idea: perhaps the blanks are not tied to the starting letters shown? Like, the “M”, “V”, etc., are part of the previous section? No, they’re right under the planet images.

Wait — looking at the image again (in my mind), the planet images are labeled: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Then below, there are two sets of blanks:

On the left:
M _________
M _________

On the right:
V _________
E _________

That still doesn’t make sense for outer planets.

Unless… oh! Maybe it’s a mistake, and it’s supposed to be the names of ALL planets, but grouped? Or perhaps it’s asking for the names starting with those letters among all planets?

But the instruction is clear: “four outer planets”.

I think the best approach is to assume that the starting letters are incorrect or misleading, and simply list the four outer planets as required.

So:

Outer planets: Jupiter, Saturn, Uranus, Neptune.

We can write them in any order, but usually in order from Sun outward.

So:

Jupiter
Saturn
Uranus
Neptune

But since the blanks have specific starting letters, and none match, I suspect there might be a typo in the worksheet. However, for accuracy, I’ll go with the correct scientific answer.

Perhaps the “M”, “V”, “E” are for something else? Let’s skip and come back.

Wait — another thought: maybe the blanks are for writing the names, and the letters are just the first letter of each line? Like, Line 1 starts with M, so you write a planet name starting with M? But again, no outer planet starts with M.

Unless… is Pluto considered? No, Pluto is not a planet anymore, and it’s not in the image.

I think I have to conclude that the starting letters are either a mistake or belong to a different part. Since the instruction is to write the four outer planets, I will write:

Jupiter
Saturn
Uranus
Neptune

And place them in the blanks, ignoring the starting letters if necessary.

But to match the format, perhaps the worksheet expects:

For the left side: maybe "Mars" and "Mercury"? But those are inner.

This is problematic.

Let me check online or recall standard Grade 4 content. Typically, outer planets are gas giants: Jupiter, Saturn, Uranus, Neptune.

I think for the purpose of this task, I'll provide the correct names.

So for the blanks, even though the starting letters don't match, I'll write:

Left top: Jupiter (but it doesn't start with M) — no.

Perhaps the "M" is for "Moon"? But Moon is not a planet.

I think there's an error in the worksheet design. To help the student, I should give the correct answer based on science.

So I'll state:

The four outer planets are: Jupiter, Saturn, Uranus, Neptune.

If forced to fill the blanks with the given starting letters, it's impossible. So I'll assume the letters are placeholders and write the names.

But let's look at the third part to see if that helps.

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Part 3: Matter - Sort into solid, liquid, gas

Words given:
lemonade, hot air, plastic blocks, stream, rocks, juice, oxygen, wood, cola

Images show:
- lemonade bottle → liquid
- red balloon → hot air (gas)
- plastic blocks → solid
- steaming kettle → stream (water vapor, gas)
- pile of rocks → solid
- glass of juice → liquid
- person breathing out → oxygen (gas)
- piece of wood → solid
- glass of cola → liquid

Now sort:

Solids: things that keep their shape, hard, not flowy.
→ plastic blocks, rocks, wood

Liquids: flow, take container shape.
→ lemonade, juice, cola

Gases: invisible, fill space, can be breathed or float.
→ hot air, stream (steam), oxygen

Note: "stream" here likely means steam from the kettle, which is water vapor (gas). "Hot air" is gas. "Oxygen" is gas.

So:

Solid: plastic blocks, rocks, wood
Liquid: lemonade, juice, cola
Gas: hot air, stream, oxygen

Now back to Part 2.

Perhaps in Part 2, the blanks are not for the outer planets' names directly, but for something else? The instruction is clear: "Write the names of the four outer planets."

And in the image, the outer planets are labeled: Jupiter, Saturn, Uranus, Neptune.

So I think the answer is simply to write those four names.

Maybe the blanks are arranged as:

First blank: Jupiter
Second blank: Saturn
Third blank: Uranus
Fourth blank: Neptune

Regardless of the starting letters shown.

Perhaps the "M", "V", "E" are typos and should be "J", "S", "U", "N".

For the sake of completing the task accurately, I'll provide the correct planet names.

So for Part 2:

The four outer planets are:
Jupiter
Saturn
Uranus
Neptune

I'll assign them to the blanks as per typical order.

Since there are four blanks, and four outer planets, I'll list them in order.

Now, to finalize.

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Final Answers:

Part 1: Earth Layers

1. mantle
2. inner core
3. outer core
4. crust

Part 2: Four Outer Planets

Assuming the blanks are to be filled with the names, despite the starting letters:

Top left: Jupiter
Bottom left: Saturn
Top right: Uranus
Bottom right: Neptune

But the starting letters are M, M, V, E — which don't match. This is likely an error. However, to comply with the worksheet, perhaps the student is expected to write the names anyway.

Maybe "M" stands for "Major" or something? Unlikely.

Another possibility: perhaps the "M", "V", "E" are for the inner planets, and the outer planets are to be written elsewhere? But the instruction is under the planet images.

I think I have to go with science.

So for Part 2, the answer is:

Jupiter, Saturn, Uranus, Neptune

Part 3: Matter Classification

Solid: plastic blocks, rocks, wood
Liquid: lemonade, juice, cola
Gas: hot air, stream, oxygen

Note: "stream" is interpreted as steam (gas), and "hot air" is gas, "oxygen" is gas.

"Cola" is liquid, yes.

Now, to box the final answer.

Since the user wants the final answer after reasoning, I'll compile it.

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Final Answer:

Earth Layers:
1. mantle
2. inner core
3. outer core
4. crust

Four Outer Planets:
Jupiter
Saturn
Uranus
Neptune

*(Note: The starting letters provided in the worksheet (M, M, V, E) do not correspond to the outer planets; the correct names are listed above.)*

Matter Classification:

| solid | liquid | gas |
|----------------|--------------|-------------|
| plastic blocks | lemonade | hot air |
| rocks | juice | stream |
| wood | cola | oxygen |