Unit 3 Lesson 3 HMH Sience 4th

How does a TV remote control send information to the TV?

• Light waves

• microwaves

• sond waves

• through a wire

What is one strength of using light to send Morse code?

• Light can be sent brighter over short distances

• Light can be sent faster

• Light can be sent over long distances in the dark

Identify one weakness of using light to send Morse code

• Easy to use in the day time

• Very difficult to use during the day time

• There are no weaknesses, using light can be easily sent when sending Morse code

Mrs. Chambliss and Ms. Eckerds are neighbors. At night they send messages to each other through their windows. Mrs. Chambliss uses her lamp, and Ms. Eckerds uses a laser pointer. How are they communicating?

• Using radio waves

• Using sound waves

• Using light waves

• Using binary code

Tags

NGSS.MS-PS4-2

Mary sends a coded message by knocking the door. Jason send a coded message by turning on and off a flashlight. Their codes appear to look exactly the same.

Mary: .... .. Jason: .... ..

How would you describe the messages Mary and Jason sent?

• They sent the same message using different typs of energy

• They sent the same message using same type of energy

• They sent different messages using different types of energy

To use the internet, computers have to be either connected using a cable or using a wireless router.

How can you explain how information is transferred using a cable?

• Information is transferred electronically

• Information is transferred by codes

• Information is transferred by sound waves

• Information is transferred by signals

Tags

NGSS.MS-PS4-3

To use the internet, computers have to be either connected using a cable or using a wireless router.

How can you explain how information is transferred using a wireless router?

• Information is transferred as codes

• Information is transferred as sound waves

• Information is transferred as radio waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What limitation does the use of cable has when using a computer?

• You can't move around in the house. You have to be attached

• You have to be within a certain distance of the box

• There is no limitation

What limitation does the use of wireless has when using a computer?

• You can't move around in the house

• You must be within a certain distance of the box

• You can be very far and use the computer when you are using wireless.

Which of these methods use technology to transfer information?

• Texting a friend

• Infrasonic animal sounds

• Smoke signals