Why Digital Signals Resist Noise
Written by Adi Ackerman, Head Teacher
"Why Digital Signals Resist Noise" is written for 7th Grade (Ages 12-13), and it covers NGSS MS-PS4-3. A 6th grader who is already steady on waves and light can use it too, and an older student can use it as a short review.
2 pages in this set
7th grade science worksheet: see why digital signals resist noise better than analog ones, then sort devices like vinyl records. Answer key included. Part of our waves, sound and light collection. Aligned to NGSS standards.
How do I use this worksheet?
Start with Wave Speed, Frequency and Wavelength and Measure Waves From Scaled Graphs. Then use the signal and materials sheets to apply the ideas to technology and design.
What students will practice
- Students will tell an analog signal from a digital signal and describe sampling.
- Students will compare how noise changes an analog trace and a digital trace.
- Students will label devices such as a vinyl record player and fiber optic internet as analog or digital.
Curriculum Links
Next Generation Science Standards
Science · 7th Grade
Find this in the curriculum
Browse the grade, subject, and topic this belongs to.
FAQ
How do I use this waves, sound and light worksheet?
⌄
Start with Wave Speed, Frequency and Wavelength and Measure Waves From Scaled Graphs. Then use the signal and materials sheets to apply the ideas to technology and design.
What does this worksheet teach?
⌄
See why digital signals resist noise better than analog ones, then sort devices like vinyl records. The directions on the page read: Read the text and study the three traces, where the dashed line is the middle level. Then complete the chart using short phrases. An answer key is included.
Can I use this waves, sound and light worksheet for homeschool or classroom?
⌄
Yes, both. We made it for 7th grade waves and light, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.
How are amplitude and energy related?
⌄
A wave's energy grows with its amplitude, so a larger amplitude means more energy. Measure Waves From Scaled Graphs has students rank four waves.
What is sampling?
⌄
Sampling is measuring a wave at regular moments and storing each measurement as a number made of 0s and 1s. It is how a digital signal is made.
What are reflection, absorption and transmission?
⌄
Reflected energy bounces back, absorbed energy stays in the material and warms it, and transmitted energy passes through. The three parts add to 100 percent.
Ratings & Reviews
No reviews yet. Be the first to share what you think.
Reviews are for ClassWeekly members.
Make a Request
Spotted something to fix, or want a worksheet we don't have yet? Tell us and we'll make it.
Worksheet Details
| Grade | 7th Grade |
| Subject | Science |
| Topic | Waves and Light |
| Standard | MS-PS4-3 |
| Pages | 2 pages |
| Difficulty | Medium |
What is ClassWeekly?
ClassWeekly offers free worksheets and printable learning resources for kids, from preschool up. All worksheets are aligned to Common Core, NGSS, and C3 Framework standards and designed by educators. Become a member to access the full library and download unlimited PDFs.