🔍 Key Concepts

• Fog vs. Clouds – how are they similar and how are they different? • Dew point – what it means when air temperature reaches the dew point. • Condensation – what has to happen to water vapor to make tiny visible droplets.

💭 Think About

• Think about what physically happens to invisible water vapor in the air just before fog appears near the sea surface. • Ask yourself: is fog considered a type of cloud, and if so, where is that cloud located? • Consider whether more than one of these statements could be true at the same time when fog forms.

✅ Before You Answer

• Check which options describe how fog forms (the physical process), not just what it looks like. • Verify that you understand that dew point is the temperature at which air becomes saturated and condensation begins. • Before choosing, see if any single choice could logically include or combine the other correct descriptions.