How does a television signal differ from a standard radio wave? . . a. its frequency varies, but the amplitude remains the same. b. it operates at a much higher frequency. c. its amplitude varies, but the frequency remains the same. d. it carries information for pictures as well as sound.

D. It carries information for pictures as well as sound.

Explanation:

Radio is a device which will convert electrical signal into audio signal. So here the signal received by radio will have only the audio information along with it.

While in television we get audio as well as picture as output so the information received by television must have both the things i.e. Sound information and Video information both.

So we can say that radio signal that is received by radio will only have audio information in the signals while in television signals we have both type of information that is video and audio.

so correct answer will be

D. It carries information for pictures as well as sound.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.