Students complete nine fill-in-the-blank problems about seismic wave analysis, seismograph function, and why direct study of Earth's deep interior is impossible. The matching activity pairs seismic waves, seismograph, P-waves, and S-waves with their definitions.
Matching seismic wave types and instruments to their definitions connects how scientists know what Earth's interior looks like to the physical evidence that makes indirect observation possible.
Style:
Earth's Layers
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Scientists study Earth's interior by analyzing seismic waves produced by earthquakes.
2. Seismic waves travel faster through dense solid rock than through liquid material.
3. Scientists cannot study Earth's deep layers directly because we cannot drill that far down.
4. When seismic waves hit a boundary between two different layers, they bend or bounce back.
5. The instrument used to detect and record earthquake waves is called a seismograph.
6. Seismic waves that stop or slow down in the outer core prove that layer is liquid.
7. By studying how waves change speed, scientists can map the layers inside Earth.
8. The deeper inside Earth you go, the higher the temperature and pressure become.
9. Earthquake waves give scientists evidence about materials they cannot see or touch.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Seismic waves
→ Energy that travels through Earth after an earthquake
A machine that detects and records earthquake vibrations
Seismograph
→ A machine that detects and records earthquake vibrations
Waves that travel only through solids and stop in liquids
P-waves
→ The fastest seismic waves that move through both solids and liquids
Energy that travels through Earth after an earthquake
S-waves
→ Waves that travel only through solids and stop in liquids
The fastest seismic waves that move through both solids and liquids
Earth's Layers
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) Scientists study Earth's interior by analyzing seismic waves produced by earthquakes.
2) Seismic waves travel faster through dense solid rock than through liquid material.
3) Scientists cannot study Earth's deep layers directly because we cannot drill that far down.
4) When seismic waves hit a boundary between two different layers, they bend or bounce back.
5) The instrument used to detect and record earthquake waves is called a seismograph.
6) Seismic waves that stop or slow down in the outer core prove that layer is liquid.
7) By studying how waves change speed, scientists can map the layers inside Earth.
8) The deeper inside Earth you go, the higher the temperature and pressure become.
9) Earthquake waves give scientists evidence about materials they cannot see or touch.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Seismic waves
→ Energy that travels through Earth after an earthquake
A machine that detects and records earthquake vibrations
Seismograph
→ A machine that detects and records earthquake vibrations
Waves that travel only through solids and stop in liquids
P-waves
→ The fastest seismic waves that move through both solids and liquids
Energy that travels through Earth after an earthquake
S-waves
→ Waves that travel only through solids and stop in liquids
The fastest seismic waves that move through both solids and liquids
Ready to Practice?
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10 Questions
10-15 minutes
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