3. digital transmission\nwhich of the following is a benefit of digital signals over analog signals?\na…

3. digital transmission\nwhich of the following is a benefit of digital signals over analog signals?\na. they are slower\nb. they are more likely to be distorted\nc. they carry data more clearly\nd. they use sound waves instead of electricity\n4. earth’s tilt and seasons\nwhy does earth have different seasons throughout the year?\na. the sun gets hotter and cooler\nb. earth’s orbit changes shape\nc. earth’s axis is tilted\nd. the moon blocks sunlight at times\n5. chemical reaction evidence\nwhich is the best evidence that a chemical reaction has occurred?\na. water evaporating\nb. a change in state\nc. bubbles forming and temperature change\nd. water boiling

3. digital transmission\nwhich of the following is a benefit of digital signals over analog signals?\na. they are slower\nb. they are more likely to be distorted\nc. they carry data more clearly\nd. they use sound waves instead of electricity\n4. earth’s tilt and seasons\nwhy does earth have different seasons throughout the year?\na. the sun gets hotter and cooler\nb. earth’s orbit changes shape\nc. earth’s axis is tilted\nd. the moon blocks sunlight at times\n5. chemical reaction evidence\nwhich is the best evidence that a chemical reaction has occurred?\na. water evaporating\nb. a change in state\nc. bubbles forming and temperature change\nd. water boiling

Answer

Brief Explanations:

  • For question 3: Digital signals represent data as discrete values, reducing noise and interference, thus carrying data more clearly. Analog signals are continuous and more prone to distortion.
  • For question 4: Earth's tilt of approximately 23.5 degrees causes different parts of the Earth to receive varying amounts of sunlight throughout its orbit, leading to seasons.
  • For question 5: Chemical reactions often produce signs like the formation of bubbles (gas production) and temperature changes. Evaporation, change in state, and boiling are physical changes.

Answer:

  1. C. They carry data more clearly
  2. C. Earth’s axis is tilted
  3. C. Bubbles forming and temperature change