BUUG NATIONAL HIGH SCHOOL
Manlin, Buug, Zamboanga Sibugay
FOURTH QUARTER SUMMATIVE TEST
GRADE 7 SCIENCE
Name: _________________________________ Section: _______________ Score: ____
Part I. Direction. Select the correct answer by shading the letter of your choice.
1. The blanket of gases that surrounds the Earth is called _____.
A. atmosphere
B. hydrosphere
C. biosphere D. lithosphere
2. What is the most abundant element in the Earth's atmosphere?
A. Argon
B. Nitrogen
C. Oxygen D. Carbon dioxide
3. What is the correct order of Earth's atmospheric layers from bottom to top?
A. Stratosphere, Mesosphere, Troposphere, Thermosphere, Exosphere
B. Stratosphere, Troposphere, Thermosphere, Mesosphere, Exosphere
C. Troposphere, Mesosphere, Stratosphere, Thermosphere, Exosphere
D. Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere
4. Which layer of the atmosphere contains the ozone layer?
A. Mesosphere
B. Thermosphere
C. Stratosphere
D. Troposphere
5. Disruptions of radio communication on earth may be due to the disturbances in the
atmosphere. In which layer of the atmosphere does it occur?
A. Ionosphere
B. Exosphere
C. Stratosphere
D. Troposphere
6. Which best describes the Earth’s mesosphere?
A. thickest layer
C. where we live and breath
B. sphere of vapor
D. cold and has very thin air
7. Which of the following statements explains why most of the weather phenomena occur
the troposphere?
A. Warm air continues to rise in troposphere as its altitude increases.
B. Most of the water vapor is confined in the troposphere.
C. Troposphere is the lowest layer of the atmosphere.
D. Air cannot escape from the troposphere.
8. What is the basis for the division of the layers of the atmosphere surrounding Earth?
A. Changing temperature
C. Changing amount of oxygen
B. Changing weather patterns
D. Changing composition of gases
9. Why is the presence of ozone above the troposphere important for the survival of living
thing on Earth?
A. It warms Earth’s surface.
B. It helps in cloud formation.
C. It makes jet flying more comfortable. D. It offers protection from the Sun’s harmful UV rays.
10. Why does the greenhouse effect result to warmer temperature near the surface of the
earth?
A. Ozone traps ultraviolet.
B. Clouds trap infrared radiation.
C. Soil absorbs incoming radiation.
D. Carbon dioxide traps infrared radiation.
11. What is meant by ‘trace’ gases?
A. They are not harmful.
B. They are naturally occurring on Earth.
C. They are emitted by trees.
D. They are present in very small amounts.
12. The warming up of the earth’s atmosphere due to heat trapped by greenhouse gases is
called __________.
A. convection current
C. air pollution
B. global warming
D. noise pollution
13. Why do you think your father loves to swim at night time rather than during daytime?
A. the sea water is cold at night time
B. the sea water is hot at night time
C. the sea water is hot during daytime
D. the sea water is cold during daytime
14. Which of the following human activities affect the atmosphere?
A. use of motor vehicle
B. cutting down of trees
C. Use of products with CFCs
D. all of the above
15. Your father avoids the sand during daytime because
A. the sand is as hot as the water
B. the sand is as cold as the water
C. the sand is hotter than the water
D. the sand is colder than the water
16. Which of the following statements about warm and cold air is true?
A. Cold air is denser than hot air and it rises.
B. Hot air is denser than cold air and it sinks.
C. Hot air is less dense than cold air and it rises.
D. Cold air is less dense than hot air and it sinks.
17. What happens to the surrounding air as warm air rises?
A. Moves in all directions
B. Moves to a higher altitude
C. Moves away from the rising air D. Moves toward the place where warm air rises
18. In what direction do winds blow?
A. From the northeast to the southwest
B. From the southwest to the northeast
C. From low pressure areas to high pressure areas
D. From high-pressure areas to low-pressure areas
19. On a beach, the wind direction during the day is usually reverse of wind direction at
night.
Which of the following statements best explains this?
A. There is more water in the sea than on land.
B. Land heats up faster than water during the day and it also cools faster at night.
C. The water remains at about the same temperature all throughout the day.
D. This is usually an indication that El Niño event under way.
20. Which warms up faster?
A. Land
B. Water
C. Both warm up at the same rate.
D. Rate of warming varies; depends on weather conditions.
Prepared by:
CATHERINE C. ELDIAN
Science Teacher