Understanding the weather

Table 2 Satellite images interacting (or not) with sunlight, and emitting (or not) IR radiation. (For use with Question 2.)

	Ocean	Land	Low-level clouds	Very deep clouds	Space	
Interaction with sunlight		Scatter sunlight back into space	No scattering or absorption of sunlight	
Emission of IR radiation	Radiate IR strongly upwards into space		No radiation of IR along satellite line of sight	
Visible image (positive) in daytime		Various shades of grey	Pale grey			
IR image (negative)