A wave along a guitar string has a frequency of 440 Hz and a wavelength of 1.5 m. What is the speed of the wave?

Draw a sine curve, and label a crest, a trough, and the amplitude.

What are mass extinctions?

Imagine you are waiting for a train to pass at a railroad crossing. Will the train whistle have a higher pitch as the train approaches you or after it has passed you by?

State the SI units used for wavelength, period, frequency, and wave speed.

Applying Concepts Imagine you are waiting for a train to pass at a railroad crossing. Will the train whistle have a higher pitch as the train approaches you or after it has passed you by?

What happens to the wavelength of a wave when the frequency of the wave is doubled but the wave speed stays the same?

a. Identifying Name three major features of the moon's surface. b. Explaining How did the moon's craters form? c. Relating Cause and Effect Why is the moon's surface much more heavily cratered than Earth's surface?

Match the term with its definition.

$$\begin{matrix} \text{Definition} & \text{Term}\\ \text{A structure such as an arm, a leg, or an antenna protruding from the body} & \text{A. appendage}\\ \text{ } & \text{B. larva}\\ \text{ } & \text{C. trochophore}\\ \text{ } & \text{D. cartilage}\\ \text{ } & \text{E. tetrapod}\\ \text{ } & \text{F. binocular vision}\\ \text{ } & \text{G. anthropoids}\\ \text{ } & \text{H. hominoids}\\ \end{matrix}$$

What safety precautions can be taken to prevent fells in the kitchen?

Test each equation for symmetry with respect to the x-axis, the y-axis, and the origin. $y = x^4 - 3x^2 - 4$

Explain why sound waves travel faster in liquids or solids than in air.

Use mental map of Turkey and Iraq to describe the course of the Euphrates River.

$$A=\left[\begin{array}{lll}{2} & {2} & {2} \\ {3} & {0} & {1}\end{array}\right]$$

and

$$B=\left[\begin{array}{rrr}{1} & {5} & {9} \\ {2} & {-1} & {4}\end{array}\right]$$

. Find these matrices: (a) A+B, (b) A-B, (c) -5A, (d) 2A-B