Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Test Unit 16
Study Guide For Test
| Question | Answer |
|---|---|
| Which term means the condition of the atmosphere at a certain place & time? | Weather |
| What is a cloud made of? | Water droplets & ice crystals |
| What are the four parts of the water cycle? | Condensation, Precipitation, Runoff, Evaporation |
| The amount of moisture in the air compared to the maximum air can hold is _____. | Humidity |
| What is Relative Humidity at 100% called? | When it is saturated |
| What instrument measures relative humidity? | Psychrometer |
| The ______ _____ is the temp. at which a gas condenses into a liquid. | Dew Point |
| _______ Clouds- puffy & white with flat bottoms; like cotton balls. they form when warm air rises | Cumulous |
| _______ Clouds- layered clouds that stretch across the sky; cover large areas of the sky & often block out the sun; fog | Stratus |
| ______ Clouds- thin, feathery looking clouds made of ice crystals; they form at high altitudes when the wind is strong | Cirrus |
| Write what the following prefixes mean: alto, cirri, & nimbo | Alto: indicate middle clouds Cirro: describe clouds that form at high altitudes Nimbo: producing precipitation |
| Name the 4 types of precipitation | rain, sleet, snow, hail |
| What is the difference between snow & sleet? | Sleet- forms when rain freezes in the air & becomes falling ice Snow- water vapor in the cloud turns into an ice crystal without becoming a liquid first |
| is a huge body of air that temperature & moisture content are constant throughout | air mass |
| What causes changes in weather? | Air masses move & meet |
| where 2 or more air masses meet & don't mix | front |
| an area in the atmosphere that has a lower pressure than the surrounding ares & has winds that spiral toward the center | cyclone |
| the rotation of air around a high pressure center in the opposite of Earth's rotation | anticyclone |
| is an electric discharge between a positively charged area & a negatively charged area | lightning |
| lightning is similar to ____ ________ | static electricity |
| tornadoes happen in only ______% of thunderstorms | 1% |
| About __% of the world's tornadoes occur in the U.S. | 75% |
| What is the single most dangerous thing about a tornado? | strong winds |
| What type of air pressure is involved with tornadoes (low or high)? | Low Pressure |
Created by:
EmCat
Popular Science sets