3.3 Problem Solve with Sound

Marion is using a gong to send a message.

How could Marion make the sound travel farther?

• move the gong indoors

• ask a friend to hold the gong

• hit the gong harder

Tags

NGSS.4-PS3-2

NGSS.4-PS4-1

Mrs. Apple is on a field trip with her class and needs to have a way to call the school in case of an emergency.

Which device will help her do so from a distance?

• telegraph

• smartphone

• megaphone

Observe this photo of a firetruck.

What problem do sirens solve?

How do they solve it?

• The ringing tells everyone the time. Anyone near it can hear.

• People need to leave quickly. The siren sends a message loud and clear.

What message does the school bell send to the students and teachers?

How does it work over a distance?

• The sound tells everyone the time start or leave the school. Anyone near can hear it.

• The sound tells everyone inside to leave the school quickly. Anyone near can hear it.

Tags

NGSS.MS-PS4-2

How does this device use sound to help people in their everyday lives?

• The sound tells everyone the time.

• The sound tells everyone it is safe.

Tags

NGSS.MS-LS1-8

What does the word distance mean?

page 94

• how far one object or place is from another

• an invention or a machine made for a specific purpose

  
  

• to give information about something

  
  

What does the word device mean?

page 94

• how far one object or place is from another

• to give information about something

• an invention or a machine made for a specific purpose

What does the word communicate mean?

page 94

• how far one object or place is from another

• to give information about something

• an invention or a machine made for a specific purpose