Warm-Up, 09.23.2009Would you be for or against school uniforms? How would you test the truth of the statement “School

uniforms cause students to learn more ?”

Seriez-vous pour ou contre des uniformes scolaires ? Comment vous examineriez ce rapport « étudiants

de cause d'uniformes scolaires pour apprendre plus. »

¿Usted estaría para o contra los uniformes escolares? Cómo usted probaría esta declaración

“estudiantes de la causa de los uniformes escolares para aprender más.”

Notes, Chapter 10A wave will only travel as long as it has energy to transfer

• Mechanical Waves: Waves that can only travel through a medium.

• Kinds of mechanical waves:– Transverse waves: matter in a medium moves perpendicular to the motion of energy.

• Ex: Waves in the ocean• Ex: Earthquakes• Ex: Visible light• Ex: An audience wave

– Compressional Waves: matter in a medium moves parallel to the motion of energy.

• Ex: Sound waves• Ex: Shock waves (explosions, earthquakes)

Transverse wave

Surfers love transverse waves.

Transverse wave

Compressional Wave

Sound moves through air much like this wave.

Compressional Wave

An explosion or earthquake would create this kind of wave.

Labs!!!!!

Labs!!!