Waves And Sound

Question 1

Object motion in propagation /wave behavior

Answer 1

Reflection, transmission, absorption and reflection, diffraction and refraction

Question 2

Diffraction

Answer 2

When waves(||) meet a gap in a barrier they pass through they then spread out after passing the gaps. ())))

Question 3

Refraction

Answer 3

When sound and light waves passes a boundary between 2 surfaces, a shift in matter like air and glass causing speed to change due to different densities

Question 4

Reflection

Answer 4

Waves bounce off an object. Sound waves are absorbed by soft surfaces whereas on hard surfaces they are reflected off giving us echoes which travel twice for our ears to hear.
Smooth surfaces reflect light such as a mirror