Data Analysis and Drawing Conclusions Quiz

Which statement best describes a trend in data?

• A single unusual result

• A repeating pattern in results

• A mistake in measurement

• A random value

If the speed of sound increases in a material, what can you infer about the particles?

• They are further apart

• They vibrate slower

• They are closer together

• They disappear

A graph shows that as decibels increase, safe listening time decreases. This relationship is:

• Direct

• Inverse

• Constant

• Random

Which is the best conclusion from data?

• Repeating the results

• Stating what happened and why

• Listing numbers

• Drawing a diagram

The speed of sound through various materials is measured as follows: Brick (3650 m/s), Sea water (1531 m/s), Iron (5950 m/s), Air at room temp (343 m/s), Glass (5100 m/s), and Distilled water (1497 m/s). Identify the trend in this data regarding the states of matter (solids, liquids, and gases).

Explain why sound travels faster in solids than in gases based on the arrangement of particles.

Based on the following noise exposure data, describe the trend: 85 dB (8 hours), 88 dB (4 hours), 91 dB (2 hours), 94 dB (1 hour), 97 dB (0.5 hours), 100 dB (0.25 hours), 103 dB (0.125 hours).

Using the trend from the noise exposure data (88 dB = 4 hours; 91 dB = 2 hours), predict the safe listening time for 90 dB.

A hospital uses radiation therapy to treat cancer by targeting tumor cells with high-energy waves. Explain why X-rays and gamma rays are used for this instead of visible light.

Define the following wave properties: a. Amplitude b. Wavelength (in water waves) c. Wavelength (in sound waves) d. Rarefaction