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Science 1206 Unit 2: Weather Dynamics Worksheet 5: Precipitation
Rain Gauge is an instrument used to measure precipitation. It the units of measure is centimeter ( cm) or millimeters.
Precipitation refers to water that reaches the ground in either a liquid or solid form. It is the stage in the water cycle that follows condensation, freezing, or sublimation. The type of precipitation depends greatly on the temperature on the ground and in the atmosphere. There are five kinds of precipitation rain, drizzle, snow, hail and sleet. The formation of the main types of precipitation are given in the table below.
Precipitation Description
Rain drops of water falling from the clouds that are larger than drizzle drops and less densely together.
Drizzle a dense, light rain with super small drops.
Snow precipitation that remains frozen from the cloud to the ground.
Freezing Rain droplets falling and then freezing once they contact a surface on the Earth
Hail Frozen pieces of water that filter through clouds through an updraft. Mostly associated with strong thunderstorms.
PART A: Multiple Choice [11]
- Precipitation is usually expressed in which of the following units?
(A) m^3 (B) g/m^2 (C) ml (D) mm
- What instrument is used to measure the amount of precipitation?
(A) rain gauge (B) thermometer (C) barometer (D) anemometer
- Any form of water that falls from the air to the Earth's surface is called _____.
(A) humidity (B) precipitation (C) rain (D) sleet
- Which of the following is not a form of precipitation?
(A) rain (B) snow (B) sleet (C) dew
- What term is used to describe when water changes from a gas to a liquid it?
(A) warms up (B) condenses (C) evaporates (D) rises
- When water droplets in a cloud combine, become too heavy, and fall to the ground as rain, snow, sleet or drizzle, we are experiencing ____.
(A) transpiration (B) condensation (C) evaporation (D) precipitation
- Four kinds of precipitation are _____.
(A) snow, ice, hail and rain (B) snow, sleet, hail and fog (C) rain, snow, sleet, and fog (D) rain, snow, sleet, and hail
- How does sleet differ from snow?
(A) It is not a form of precipitation. (B) It is liquid and not ice. (C) It starts as rain and freezes in the air. (D) It starts as water vapor and changes to a solid.
- Which statement about hail is correct?
(A) It is rain that falls through a layer of freezing air. (B) It may be sent up into the clouds many times. (C) It forms in winter in low stratus clouds. (D) It is a liquid form of precipitation.
- Read the definitions below, then label the water cycle diagram. [8]
Accumulation - The process in which water pools in large bodies (like oceans, seas and lakes)
Condensation - the process in which water vapour (a gas) in air turns into liquid
Evaporation - the process in which liquid water becomes water vapour ( a gas). Water vaporizes from the surface of oceans and lakes, from the surface of land, and from melts in snow fields.
Precipitation- The process in which water ( in the form of rain, snow, sleet, hail and drizzle ) falls from clouds in the sky.
Subsurface Runoff - rain, snow melt, or other water that flows in underground streams, drains, or sewers.
Surface Runoff - rain, snow melt, or other water that flows in surface streams, rivers, or canals.
Transpiration - The process in which some water within plants evaporates into the atmosphere. Water is first absorbed by the plants roots, then later exits by evaporating through the pores in the plant.
