A boulder is...
Opaque
This light source is:
Artificial.
Natural.
A mirror is...
Opaque
Glasses (lens) are...
Transparent
A window is...
Transparent
A fishbowl is...
Transparent
Desks are...
Opaque
Sunglasses are...
Translucent
This light source is:
Artificial.
Natural.
A wall is...
Opaque
This light source is:
Natural.
Artificial.
This light source is:
Natural.
Artificial.
A windshield is...
Transparent
This light source is:
Natural.
Artificial.
Aluminum foil is...
Opaque
Cellophane plastic is...
Translucent
A thick jacket is...
Opaque
Steamy windows are...
Translucent
Thick curtains are...
Opaque
This light source is:
Natural.
Artificial.
This light source is:
Natural.
Artificial.
A basketball is...
Opaque
Frosted glass is...
Translucent
Water is...
Transparent
This light source is:
Natural.
Artificial.
This light source is:
Artificial.
Natural.
The school roof is...
Opaque
A water bottle is...
Translucent
A book is...
Opaque
Wax paper is...
Translucent
A tree trunk is...
Opaque
Thin curtains are...
Translucent
A glass jar is...
Transparent
This light source is:
Artificial.
Natural.
Paper is...
Translucent
This light source is:
Natural.
Artificial.
This light source is:
Artificial.
Natural.
This light source is:
Artificial.
Natural.