Unit 3 Test Part 1 review

How do cell phones receive decoded information over long distances?

• They receive digitized information and change it to voice.

• They receive voice and change it to digitized information.

• They receive digitized information and change it to Morse code.

• They receive Morse code and change it to digitized information.

Tags

NGSS.MS-PS4-3

A student sends the text message “Hi.” The cell phone turns the message into binary code. How are the H and the I different in binary code?

• Each letter is coded as a different pattern of 1s and 0s

• One letter is coded as a 1, and the other is coded as a 0.

• Each letter is coded as the number that matches its place in the alphabet.

• One letter is coded as a dark pixel, and the other letter is coded as a light pixel.

Tags

NGSS.MS-PS4-3

An engineering team wants to design a new sled that is faster and more economical. What is a criterion for their solution?

• The sled needs to be durable

• The sled should be on budget

• The sled needs to be built on time.

• The sled should slide smoothly over the snow so that it is faster

Tags

NGSS.MS-ETS1-1

Which phrase describes evidence that energy, in the form of heat, has been transferred?

• Wind blows and a windmill turns

• Burnt toast comes out of a toaster.

• A radio is turned on and music is heard.

• A lamp is turned on and light can be seen.

Engineers have improved cell phones. 

Choose the words from the drop-down lists to explain how phones can take and send clearer photos

 The camera on the phone takes photos with ________pixels.

Fill in the blank with the correct answer.

• More

• Fewer

• No

The phone sends the information. Decoding the information is slower for clear photos than for fuzzy photos. Engineers improved this problem by making________ faster.

Fill in the blank with the correct answer.

• cameras

• computers

• light

Tags

NGSS.MS-PS4-3

Electronic devices work differently and are designed to serve different purposes.

A flashlight converts electricity to ___________.

• light

• sound

Electronic devices work differently and are designed to serve different purposes.

A smartphone converts electricity to __________.

• sound

• light

• sound and light

Tags

NGSS.MS-PS4-1

Electronic devices work differently and are designed to serve different purposes.

A portable music player converts electricity to _______.

• light

• sound