WorksheetsPhysical and Chemical Changes Review
Total questions: 25
Worksheet time: 14mins
Name
Class
Date
1.
What must occur before clouds can form?
a)
Water vapor must get warmer.
b)
Water vapor must lose heat energy.
c)
Precipitation must begin to fall and run off.
d)
Transpiration must add water vapor to the atmosphere.
2.
In which way are evaporation and condensation similar?
a)
Both cause decreases in air temperature.
b)
Both cause increases in air temperature.
c)
Both are caused by the warming of the atmosphere.
d)
Both are caused by changes in heat energy.
3.
Which process allows green plants to control the amount of water stored in their leaves?
a)
photosynthesis
b)
evaporation
c)
transpiration
d)
condensation
4.
If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
a)
2 grams
b)
5 grams
c)
10 grams
d)
15 grams
5.
Which is an example of a different substance being formed?
a)
glass breaking
b)
metal melting
c)
water freezing
d)
wood burning
6.
A student makes a model of the water cycle by putting water in a cup, and placing plastic wrap on the top of the cup. The student then places the cup by a sunny window. Which best explains why the student placed the model near a sunny window?
a)
The thermal energy from the sun will start the process of evaporation in the model.
b)
The light energy from the sun will start the process of evaporation in the model.
c)
The mechanical energy from the sun will start the process of evaporation in the model
d)
The electrical energy from the sun will start the process of evaporation in the model.
7.
Which of the following best explains how condensation occurs?
a)
Heat energy from the sun is increased, causing water vapor to condense
b)
Water travels to the sun, and then condenses into clouds
c)
Water in the air always turns to liquid when it comes in contact with a surface
d)
Heat energy from the sun is decreased, causing the water vapor to cool and condense
8.
Which of the following changes to matter will result in a new substance with new properties?
a)
Breaking glass
b)
baking a cake
c)
boiling water
d)
chopping wood
9.
Which fact best explains why most evaporation happens in the oceans?
a)
Ocean water is salty.
b)
There are mountain ranges on the ocean floor.
c)
About 97 percent of Earth’s water is ocean water.
d)
Fewer clouds block sunlight over the ocean.
10.
Ricco is making paper air planes. He uses 5 grams of paper to make 10 paper airplanes. If he weighs the paper airplanes, which is their total mass?
a)
5 grams
b)
10 grams
c)
15 grams
d)
20 grams
11.
Which example best describes a physical change?
a)
baking a pie
b)
burning wood
c)
making a paper airplane
d)
frying an egg
12.
A 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the weight of the egg?
a)
44 grams
b)
55 grams
c)
100 grams
d)
110 grams
13.
A teacher places a penny into an amount of acid in a closed container to demonstrate a chemical change. The penny weighs 3 grams and the acid 230 grams. After the chemical reaction takes place, what will be the mass of the penny and acid?
a)
3 grams
b)
200 grams
c)
230 grams
d)
233 grams
14.
Which has the greatest effect on the movement of the jet stream?
a)
size of clouds
b)
amount of precipitation
c)
differences in air temperatures
15.
Which lists some effects of El Niño?
a)
warmer temperatures and more rain
b)
warmer temperatures and less rain
c)
cooler temperatures and less rain
16.
Which types of winds cause weather in North Carolina?
a)
polar easterlies
b)
prevailing westerlies
c)
prevailing easterlies
17.
In which direction do weather patterns move in the United States?
a)
south to north
b)
west to east
c)
north to south
d)
east to west
18.
Which statement best describes how weather patterns along the equator differ from weather patterns in the mid latitudes?
a)
Temperatures along the equator vary with the seasons, while temperatures in the mid latitudes are consistently cold.
b)
Temperatures along the equator vary with the seasons, while temperatures in the mid latitudes are consistently warm.
c)
Temperatures in the mid latitudes vary with the seasons, while temperatures along the equator are consistently warm.
19.
Which weather conditions most likely affect the humidity in North Carolina?
a)
temperature and precipitation
b)
temperature and wind speed
c)
wind speed and wind direction
20.
Which statement best explains how wind is formed?
a)
Air is warmed by radiation and air flow increases as a result of the warming.
b)
Pressure decreases as a result of frictional contact with earth causing air to flow more freely.
c)
Unequal heating of the land causes air to flow from areas of higher pressure to areas of lower pressure.
21.
A meteorologist noticed an increase of wind speed caused by temperature changes in an upcoming weather pattern. Which best describes why this is happening?
a)
The greater the temperature difference between the air masses, the slower the wind blows in the jet stream.
b)
The greater the temperature difference between the air masses, the faster the wind blows in the jet stream.
c)
The lesser the temperature difference between the air masses, the faster the wind blows in the jet stream.
22.
What two factors determine the direction in which prevailing winds blow?
a)
the rotation of the Earth on its axis and the cool air from the poles
b)
the revolution of the Earth around the sun and the cool air from the poles
c)
the rotation of the Earth on its axis and the sun’s uneven heating of the earth
23.
Why do most storms move from the west coast of America to the east coast?
a)
El Nino
b)
La Nina
c)
jet stream
d)
Gulf Stream
24.
Which is most likely an effect of the Gulf Stream?
a)
heavy rains in California
b)
severe drought in Australia
c)
milder temperatures in Florida
25.
Which is the best indicator that precipitation is on the way?
a)
lower air pressure
b)
low humidity
c)
low temperature
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