What makes dew form on grass

However, nighttime is usually the primary period when the factors that cause dew to form are just right. If so, he factors that into how he might play throwing someone out.

If a ball that touches the ground before he gets to it is going to be wet when he picks it up, it makes it slippery; so depending on the game time situation, he may decide to be more conservative on throws back in to the infield, in case the ball slips when he throws it. In any event, to answer your first question of what causes dew, air holds a certain amount of water vapor in it.

The higher the temperature, the more water vapor air can hold. So, condensation depends on the state of the atmosphere, such as its temperature and moisture, while evaporation depends on the temperature of the object. If the object gets cold enough, and there is enough moisture in the air, condensation is much greater than evaporation and the film grows into dew drops. Dew also tends to form on calm nights that come with clear skies. Windy conditions and cloudy skies keep the ground from cooling.

The Weather Guys. Skip to content. Home About Listen Live! It impacts the way people dress each day and the types of structures built. Explore weather and its impacts with this curated collection of classroom resources. Humidity, or the amount of moisture in the air, changes based on air temperature, warm bodies of water, and air movement.

The water cycle describes how water is exchanged cycled through Earth's land, ocean, and atmosphere. Join our community of educators and receive the latest information on National Geographic's resources for you and your students. Skip to content. Twitter Facebook Pinterest Google Classroom. Encyclopedic Entry Vocabulary. Dew is the moisture that forms as a result of condensation. Condensation is the process a material undergoes as it changes from a gas to a liquid.

Dew is the result of water changing from a vapor to a liquid. Dew forms as temperatures drop and objects cool down. If the object becomes cool enough, the air around the object will also cool.

Colder air is less able to hold water vapor than warm air. This forces water vapor in the air around cooling objects to condense. When condensation happens, small water droplets form—dew. The temperature at which dew forms is called the dew point. The dew point varies widely, depending on location, weather, and time of day.

Humid locations, such as the warm, coastal tropics , are more likely to experience dew than arid areas. Humidity measures the amount of water vapor in the air. Warm, humid air is full of moisture that can condense during calm, cool nights. Weather conditions can also influence an area's dew point.