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Name
Date
Vocabulary
STUDENT RESOURCE 1.1
INFORMATION SHEET
atmosphere the blanket of air that
surrounds Earth
Weather occurs in the layer of the
atmosphere closest to Earth, called the
troposphere.
condensation the process by which a gas
changes to a liquid
Water vapor condenses when it is
cooled.
evaporation the process by which a
liquid changes to a gas
Warmer temperatures increase the
rate of evaporation.
water vapor water in a gas state
Water vapor is invisible. Air contains
varying amounts of water vapor.
weather the condition of the atmosphere
at a given place and time
Weather patterns form due to the
uneven heating of Earth’s curved
surface by the Sun.
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precipitation water that falls to Earth’s
surface
Precipitation occurs when water falls
from clouds as rain, hail, sleet, or snow.
water cycle the continuous movement
of water in the environment through
evaporation, condensation, and
precipitation
The Sun is the “engine” that drives the
water cycle.
WEATHER AND WATER • SECTION 1 WHAT IS THE WEATHER? • 9
Name
Date
STUDENT RESOURCE 1.2
INFORMATION SHEET
Weather Symbols
Percentage
Wind Speed
Precipitation
Cloud Cover
Type
Symbol
Symbol
0%
Drizzle
10%
Notes
Speed
in mph
Symbol
calm
1–4
20%–30%
Fog
40%
50%
5–8
9–14
60%–70%
Hail
80%
15–20
21–25
90%
Haze
26–31
100%
32–37
Rain
Weather Fronts
44–49
Symbol
Shower
Cold front
50–54
55–60
Warm front
Sleet
Stationary front
61–66
67–71
Occluded front
Smoke
Air Pressure
High pressure
Low pressure
72–77
Snow
H
L
Wind Direction
N
NE
NW
Thunderstorm
W
E
Falling pressure
Hurricane
Rising pressure
SW
SE
S
Example:
West wind 5–8 mph
10 • WEATHER AND WATER • SECTION 1 WHAT IS THE WEATHER?
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Type
38–43
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Name
Date
Using a Thermometer
STUDENT RESOURCE 1.3
ACTIVITY SHEET
˚F
˚C
230
220
210
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
110
100
90
80
70
60
50
40
30
20
10
0
–10
–20
Practice reading the thermometer by coloring its tube to different levels, then reading in
ºF and ºC.
WEATHER AND WATER • SECTION 1 WHAT IS THE WEATHER? • 11
12 • WEATHER AND WATER • SECTION 1 WHAT IS THE WEATHER?
Front (type)
Air Pressure
(in inches,
rising or
falling )
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My Weather Chart
Wind
(direction
and speed)
Type of
Clouds
Dew Point
(ºC/ºF)
Relative
Humidity
(%)
Precipitation
(type)
Cloud Cover
(%)
Temperature
(ºC/ºF)
Date
Name
Date
STUDENT RESOURCE 1.4
ACTIVITY SHEET
Name
Date
Section 1 Assessment
STUDENT RESOURCE 1.5
ASSESSMENT SHEET
Vocabulary
Write the term that completes each sentence. Some terms have
more than one word.
1 Water in the gas state is called
.
2 The blanket of air that surrounds Earth is called
its
.
The Water Cycle
3 Complete the chart by labeling
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the steps in the water cycle.
Reading a Thermometer
4 Read the thermometers. Record the temperature of the
water in each cup, in °F and in °C.
Cup A:
Cup B:
5 Which cup will lose water to evaporation more quickly?
Explain the reason for your answer.
WEATHER AND WATER • SECTION 1 WHAT IS THE WEATHER? • 13