MS-PS4-2
The standard
Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.
Next Generation Science Standards
What this standard means
Students need to model what happens when light or sound meets a material. They should show and explain three possible outcomes, reflection, absorption, and transmission, using drawings, labels, simple diagrams, or a short written model.
Mastery looks like matching wave behavior to evidence from a material, such as a mirror reflecting light, a curtain absorbing sound, or glass transmitting light. Students often mix up absorption and transmission, or treat waves like objects that simply bounce or stop. They also need help separating what they observe from why it happens.
Ways to teach it
- Hands-on: Shine a flashlight through clear plastic, wax paper, foil, and black paper, then have students sketch what the light did.
- Prompt: Explain why a gym sounds loud and echoey, but a carpeted classroom sounds quieter, using reflection and absorption.
- Quick assessment: Show a material photo and ask students to choose reflect, absorb, or transmit, then justify with one observation.
- Real-world connection: Compare sunglasses, windows, and blackout curtains to explain how each material changes incoming light waves.
Plan a lesson for MS-PS4-2
Generate a complete lesson plan aligned to this standard, with objectives, activities, and materials. Free, no account needed.
Related standards
- MS-PS4-1
Use mathematical representations to describe a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave.
- HS-PS4-5
Communicate technical information about how some technological devices use the principles of wave behavior and wave interactions with matter to transmit and cap...
- 4-PS4-1
Develop a model of waves to describe patterns in terms of amplitude and wavelength and that waves can cause objects to move.
- 4-PS4-2
Develop a model to describe that light reflecting from objects and entering the eye allows objects to be seen.