Question

group x develops a model of refraction during class. the group constructs a short description to define refraction underneath their model. group y develops a model based on their data.
group xs model
group ys model
group xs original description: refraction occurs when light enters a new medium and it bends to change direction.
both models are correct. how can group x include information from group ys model to best revise their original description?
refraction occurs when light enters a new medium at an angle and it bends to change direction.
refraction occurs when light enters a new medium and it changes speed but not direction.
refraction occurs when light enters a new medium and it bends to change direction before returning to its original direction.
refraction occurs when light enters a new medium and is blocked by the medium.

Explanation:

Group Y's model shows light entering medium perpendicularly with no direction - change. Group X's original description lacks the 'at - an - angle' condition. Refraction occurs when light enters a new medium at an angle and changes direction.

Answer:

Refraction occurs when light enters a new medium at an angle and it bends to change direction.