Study Guide For Science Test

Front 1

How does water flow?

Back 1

Water flows from high ground to low ground.

Front 2

What areas of the city are particularly at risk for flooding?

Back 2

Areas of low elevation
Near the river

Front 3

What 2 things are not weather events and why?

Back 3

Earthquakes and volcanoes because they are plate tectonic.
Weather forms in the atmosphere.

Front 4

How do properties of air affect these aspects of weather:
-Temperature
-Wind
-Cloud Formation

Back 4

Temp.-High air pressure --increases temp.
low air pressure-- decreases temp.
Wind: air moves form high to low pressure
Cloud: warm air rises(why? because it's less dense) and cools at high elevation and condenses

Front 5

The wet bulb temp. on psychrometer drops 9 degrees.
Why?
Humidity?

Back 5

Why does the temp. drop because the water on the bulb evaporated off.
The humidity would be low.

Front 6

Dew has formed. What does that tell you about the temp. and relative humidity?

Back 6

Act. temp. is less than or = to Dew Point and that tells us the relative humidity is 100%. And it's above freezing.

Front 7

Describe 3 facts that increase chances for an area to flood.

Back 7

Low elevation.
Being near a body of water.
Living in a city.

Front 8

Safety precautions for tornadoes:

Back 8

-seek shelter
-don't go near windows
-get to the lowest ground

Front 9

Safety precautions for Lightning:

Back 9

-avoid metallic objects
-stay away from high places
-help anyone who has been struck

Front 10

Safety precautions for floods:

Back 10

-keep alert for signs of heavy rains
-get to higher ground
-don't pitch tent in dry stream bed
-don't drive through flooded areas

Front 11

Describe relationship between thunderstorm, lightning, and tornado frequency.

Back 11

thunderstorm frequency increases the chance for lightning and tornado frequency.

Front 12

What factors lead to relationship between thunderstorm, lightning, and tornado frequency?

Back 12

-fronts (Polar air masses/ Tropical air masses)
-frontal wedging
-warm water currents

Front 13

Which storm has the highest wind speeds?Which storm causes the most deaths per year?

Back 13

Tornadoes have the highest wind speeds and thunderstorms causes the most deaths per year.

Front 14

Which 3 states had fewest deaths per one million persons due to lightning?

Back 14

Alaska, Hawaii, Pennsylvania

Front 15

Which three states had the largest numbers of deaths per one million due to lightning?

Back 15

Arkansas, Wyoming, New Mexico

Front 16

How is lightning different from thunder?

Back 16

Lightning is an electrical discharge that produces thunder. Thunder is the rumbling sound.

Front 17

Why do you hear thunder only after you see lightning?

Back 17

Because light travels faster than sound.

Front 18

Is it possible for lightning to strike without rain?

Back 18

Yes because lightning can strike the ground beyond the parent thunderstorm.

Front 19

In which season is the frequency of tornadoes the highest?

Back 19

Spring-early summer

Front 20

In which season is the frequency of tornadoes the lowest?

Back 20

Fall-winter

Front 21

Why do you think that July has a relatively large # of tornadoes, but relatively few deaths?

Back 21

Because people are more aware.

Front 22

Why do you think that December has a relatively small number of tornadoes, but relatively many deaths, especially when compared to July, August, and September?

Back 22

Because people weren't prepared and they didn't expect it to happen.

Front 23

What river was affected by the flood?

Back 23

Cedar River

Front 24

Difference between 100 yr plain and 500 yr plain?

Back 24

500 yr plain= once every 500 yr the water will reach that land. 2% chance of flooding each yr.
100 yr plain= once every 100 yr the water will reach the land. 1% chance of flooding each yr.

Front 25

3 things to maintain safety due to flooding

Back 25

-Raise the levees
-Sandbag
-Evacuate

Front 26

How do we define violent?

Back 26

-Death
-Damage
-Wind Speed
-Duration
-Size

Front 27

Most violent storm in terms of deaths?

Back 27

Thunderstorms(Floods/Lightning)

Front 28

Most violent storm in terms of damage?

Back 28

Hurricanes and Tornadoes

Front 29

Most violent storms in terms of wind speed?

Back 29

Tornadoes

Front 30

Most violent storm in terms of duration and size?

Back 30

Hurricanes
duration=week
diameter-200-300 miles across

Front 31

What system do all storms form in?

Back 31

Low pressure systems.

Front 32

What clouds do storms form from?

Back 32

Cloud: cumulonimbus

Front 33

What do thunderstorm and tornadoes need to form?

Back 33

Strong updraft- Cold front and warm moist air

Front 34

What do hurricanes need to form?

Back 34

Warm ocean water approx. 80 F or higher.

Front 35

What is Lightning?

Back 35

a sudden electrical discharge

Front 36

What are the ingredients needed for hail formation?

Back 36

-freezing temperatures
-lots of moisture
-strong updrafts

Front 37

What are the similarities of tornado vs. hurricane?

Back 37

-both storms form in low pressure systems
-have fast spiraling winds
-both cause damage
both associated with heavy winds

Front 38

What are the differences between hurricanes and tornadoes?

Back 38

Duration- hurricanes last longer
Size-hurricanes are much bigger
Location of formation
Different times of year- hurricanes form in fall
tornadoes in the spring.