REVIEW MID TEST 2

Which is the best description of a sound wave when the pitch of the sound is very high?

• (A) It has a low frequency.

• (B) It has a high frequency.

• (C) It has no wavelength.

• (D) It has no frequency.

2.         How is a rainbow formed? How is a rainbow formed?

• (A) The air during rain reflects all the colors of the rainbow.

• (B) The light is being absorbed by the raindrops.

• (C) The light is transmitted through the clouds which causes us to see a rainbow.

• (D) Light rays bend as they pass from air through drops of water.

    A student placed her ear on a student desk and listened to a second student tapping lightly on the desk.  The experiment was repeated with the same tapping but the first students kept her ear 3 cm above the desk surface, and the sounds were different.  What is the best explanation for the different sounds?

•  The sound waves travel faster through the air than the desk.

• The sound waves travel through the desk, but not the air.

• The sound waves travel through the desk, but not the air.

• The sound waves travel slower through the air than the desk.

   Why do we see objects as white?

• They absorb all the light.

• They absorb some light and reflect.   

• They reflect all the light.

• They reflect some light.

   Why do we see objects as BLACK?

• They absorb all the light.

• They absorb some light and reflect.   

• They reflect all the light.

• They reflect some light.

A student places a ruler into a glass of water and observes that the ruler looks broken. What is happening?

• The force of the water has broken the ruler.

• Water in the cup reflects light around the ruler in a different

  direction than the air.

• The ruler is broken before it is put in the water.

• Light is refracted as it enters the water, making the ruler look broken

 

If you are wearing a yellow shirt, what is true of the light that strikes it?

• Yellow is absorbed, another color is reflected.

• All colors are reflected.

• Yellow is reflected, another color is absorbed.

• All colors are absorbed.

Look at this picture. What is the picture showing?

• A reflection

• A refraction

• An absorption

• A prism

Which type of heat transfer is happening inside the hot air balloon?

• Convection

• Conduction

• Radiation

• Conductor

The candle will slowly heat the metal and transfer the heat directly to the man hand. What form of heat transfer caused this?

• Convection

• Conduction

• Radiation

• Isolator