Some early mornings, dew drops can be found on grass (or on a car parked outside), but not on other materials like sidewalks. What has happened?
Question 12 options:
The nighttime temperature on grass and the car went below the dew point, but the concrete did not reach the dew point.
Temperatures on grass and the car were above the dew point, but the concrete was cooler than the dew point all night.
The relative humidity of the air above the grass and car was higher than it was over the concrete.
None of these