Waves And Energy Worksheets | School worksheets, Worksheets ... - Free Printable

Let’s go step by step through each question. We’ll use the wave diagrams and definitions to answer accurately.

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Amplitude Section:

We are given three waves: Wave 4, Wave 5, and Wave 6.

- Wave 4: Very small up-and-down movement — low amplitude.
- Wave 5: Medium-sized peaks and valleys — medium amplitude.
- Wave 6: Largest peaks and valleys — highest amplitude.

*(Note: Amplitude is measured from the center line to the top of a peak or bottom of a valley.)*

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Question 1: Which wave has the highest amplitude?
→ Look at how far the wave goes above/below the center line. Wave 6 goes the farthest → Wave 6

Question 2: Which wave has the lowest amplitude?
→ Wave 4 barely moves up/down → Wave 4

Question 3: Use a ruler and measure the amplitude of Wave 5.
→ Since we can’t physically measure here, we estimate based on diagram proportions.
In typical school worksheets like this, if you were using a ruler, you’d measure from center line to peak.
Assuming standard scaling (e.g., each “dot” unit = 1 cm), Wave 5’s peak is about 2 units from center.
But since no actual scale is given, and this is likely expecting a visual estimation:
→ Approximately 2 cm (or whatever unit your worksheet uses — but in absence of real ruler, we say “measure from center to peak”)

*However, for homework purposes, if you’re doing this on paper, just take your ruler and measure from the dotted center line to the top of one peak in Wave 5. Write that number with units (like cm).*

Since we must give an answer without physical measurement, and assuming standard test design:
→ Let’s assume it’s 2 units (we’ll note this as estimated).

Question 4: What is the definition of amplitude?
→ Amplitude is the maximum distance a wave moves from its rest position (center line) to its peak or trough. It tells us how “tall” the wave is — which relates to loudness in sound or brightness in light.

Simple definition:
→ The height of the wave from the middle line to the top (or bottom).

Question 5: How can you tell by looking at it if a wave has high or low amplitude?
→ Just look at how big the ups and downs are. Big bumps = high amplitude. Small wiggles = low amplitude.

Answer:
→ If the wave goes very far up and down from the center line, it has high amplitude. If it stays close to the center line, it has low amplitude.

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Amplitude Connection (Juan playing piano):

Music starts at *mezzo-forte* (medium loud) → then *crescendo to forte* (gets louder) → ends at *piano* (quiet).

So:

- Beginning: medium volume → matches Wave 5 (medium amplitude)
- Middle: loud → matches Wave 6 (highest amplitude)
- End: quiet → matches Wave 4 (lowest amplitude)

Question 6: Which wave represents the music at the beginning?
→ mezzo-forte = medium → Wave 5

Question 7: Which wave represents the music in the middle?
→ forte = loud → Wave 6

Question 8: Which wave represents the music at the end?
→ piano = quiet → Wave 4

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Final Waves Goodbye: Compare A-D to Standard Wave

Standard Wave: moderate amplitude, moderate frequency (about 2 full cycles shown).

Recall:
- Amplitude = height from center to peak
- Frequency = how many waves fit in same space (more waves = higher frequency)

Compare each:

Wave A:
- Height: same as standard → Same amplitude
- Number of waves: only 1.5 cycles vs standard’s 2 → fewer waves → Lower frequency

Wave B:
- Height: smaller than standard → Lower amplitude
- Number of waves: about 2.5 cycles → more waves → Higher frequency

Wave C:
- This looks like a single slow curve — not really a repeating wave? But compared to standard:
- Height: similar? Actually, it dips lower but doesn’t repeat — tricky.
Wait — looking again: Wave C is almost flat except for one big dip. So:
- Amplitude: actually larger? From center to bottom is deeper than standard’s peak? Hmm.
BUT — in most textbook comparisons, if it’s not oscillating regularly, we still compare max displacement.
However, visually, Wave C’s deepest point is farther from center than standard’s peak → so higher amplitude?
Frequency: only half a cycle → definitely lower frequency

Wait — let me recheck carefully.

Actually, looking at the diagram logic (common in such worksheets):

Standard wave: 2 full humps (peaks and troughs) over certain width.

Wave A: 1.5 humps → less frequent → lower frequency; height same → same amplitude.

Wave B: 2.5 humps → higher frequency; height shorter → lower amplitude.

Wave C: Only ONE big downward curve — no upward peak shown? Or maybe it's asymmetric. But typically, amplitude is absolute value of max displacement. If it goes down further than standard goes up, then amplitude is higher. And frequency: only part of a cycle → much lower frequency.

Wave D: 3 full humps → higher frequency; height same as standard? Looks like same peak height → same amplitude? Wait — actually, looking closely, Wave D’s peaks seem same height as standard → so same amplitude? But wait — in some versions, they make D have same amplitude but higher frequency.

Hold on — let’s be precise.

Actually, in many such diagrams:

- Standard: amplitude = X, frequency = Y
- A: same amplitude, lower frequency (fewer waves)
- B: lower amplitude, higher frequency (shorter waves, more packed)
- C: higher amplitude (bigger swing), lower frequency (only one big wave)
- D: same amplitude, higher frequency (same height, more waves)

Yes — that makes sense.

So:

A: Amplitude: Same | Frequency: Lower
B: Amplitude: Lower | Frequency: Higher
C: Amplitude: Higher | Frequency: Lower
D: Amplitude: Same | Frequency: Higher

*(Double-checking D: yes, same peak height as standard, but 3 waves instead of 2 → higher frequency)*

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Now compile all answers.

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Final Answer:

1. Wave 6
2. Wave 4
3. [Measure with ruler — approximately 2 cm or units from center to peak] *(Note: Since no actual ruler, accept "2 units" or student’s measured value)*
→ For consistency, we'll write: 2 units (assuming standard worksheet scale)
4. The distance from the center line to the top (or bottom) of the wave.
5. If the wave goes far up and down from the center, it has high amplitude. If it stays near the center, it has low amplitude.
6. Wave 5
7. Wave 6
8. Wave 4

Final Waves Goodbye:

A: Amplitude: Same | Frequency: Lower
B: Amplitude: Lower | Frequency: Higher
C: Amplitude: Higher | Frequency: Lower
D: Amplitude: Same | Frequency: Higher