Chapter 3 grade 4

1.  The bar graph above shows how fast a sound wave can travel through different types of media.

Through which medium will a sound travel the slowest?

• Iron

• Glass

• oxygen

• water

Tags

CCSS.RI.4.1

CCSS.RI.4.3

CCSS.RI.4.7

What conclusion is supported by the data shown in the bar graph?

• Sound waves travel faster through air than through water.

• Sound waves travel faster through water than air.

• Sound waves travel at the same speed in different mediums.

Tags

CCSS.RI.4.3

CCSS.RI.4.7

Which device can receive and transmit digital signals?

• mirror

• prism

• computer

• water

Tags

CCSS.L.4.6

Which statement best describes the impact of digital technology on communications?

• 1. Digital technology made the distance and speed of communication slower.

• Digital technology has made  the speed of communication faster.

 _____________carries energy from one place to another.

• waves

• crest

• trough

• amplitude

Tags

CCSS.L.4.6

CCSS.RI.4.3

CCSS.RI.4.4

What letter represents a crest in the wave below?

• D

• C

• E

• G

Tags

CCSS.RI.4.7

If you wanted to measure the amplitude, what would you measure?

• From B to the midline

• Distance from E to G

• Length of the whole red line

Tags

CCSS.RI.4.3

CCSS.RI.4.7

If you wanted to measure the wavelength, what would you measure?

• From B to the midline

• Distance from E to G

  (or D to F)

• Length of the whole red line

Tags

CCSS.RI.4.3

CCSS.RI.4.7

  If more energy was added to the wave above, what would you predict would happen to the wave?

•  The amplitude would increase.

• The amplitude would decrease.

• The wavelength would decrease.

• The wavelength would decrease.

 Isaac is looking at a red apple on an apple tree.  Which of these choices explains why the apple is red?

•  Light hits the apple, and red light is reflected back to the eye.

• Light hits the apple, and all light is reflected back to the eye.

• The apple makes its own red light for the eye to see.

Tags

CCSS.RI.4.3