Fill in the blank.
( dark side full moon lunar penumbra straight line )
1. A
eclipse occurs when the Earth blocks sunlight from reaching the Moon.
2. Eclipse of the Moon occurs if the Earth, the Moon and the Sun are in a and the position of the Earth is between the Sun and the Moon.
2. Eclipse of the Moon occurs if the Earth, the Moon and the Sun are in a and the position of the Earth is between the Sun and the Moon.
3. An eclipse of the Moon occurs only during .
4. An eclipse of the Moon can be seen with the naked eye if a person is on the of the Earth.
5. The shadow of the Earth has two regions: A dark shadow region (umbra) and a light shadow region ( ).
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EVALUATION 2
Tick ( / ) the correct statements and cross (x) the false statements.
- The eclipse of the Sun occurs because the Earth is between the Moon and the Sun. ( )
- The eclipse of the Sun occurs during a full moon at night. ( )
- The eclipse of the Sun occurs at certain parts of the of the Earth during daytime. ( )
- We can watch the eclipse of the Sun directly. ( )
- The eclipse of the Sun occurs longer than the eclipse of the Moon. ( )
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QUIZ
1. What is the correct alignment during a solar eclipse?
A Sun, moon, earth
B Sun, earth, moon
C Moon, sun, earth
2. What is the maximum number of solar eclipses that can occur during a calender year?
A 3
B 4
C 5
3. What is the minimum number of solar eclipses that can occur during a calender year?
A 0
B 1
C 2
4. Total solar eclipses occur due to a unique feature common to both the sun and the moon. What is this feature?
A Same equatorial diameter
B Same angular diameter
C Same distance from earth
5. During a solar eclipse, an observer on the moon, looking at the earth would see,
A The sun completely covered by the earth
B Earth completely covered by moon's shadow
C Earth partially covered by moon's shadow
6. Solar eclipses always occur on,
A Full moon
B New moon
C Crescent moon
7. What is the average duration of 'totality' in a total solar eclipse?
A 10 – 20 seconds
B 2 – 3 minutes
C 1 – 2 hours
8. In which type of solar eclipse can the 'diamond ring' effect occur?
A Partial solar eclipse
B Total solar eclipse
C Annular solar eclipse
9. The same pattern of solar eclipses will repeat every 18 years 11 days 8 hours. This is known as the,
A Mayan cycle
B Hedes cycle
C Saros cycle
10. How often will the same solar eclipse occur at the same place on earth?
A 18 years 11 days 8 hours.
B 54 years and 1 month
C 364 years 12 days
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EVALUATION 3
1) The following information shows a situation in a village.
The residents of a village dispose various waste products into a nearby river. At the same time, they also use the water obtained from that particular river for their daily usage.
Which of the following may happen?
I Water pollution
II Food poisioning
III Infection of contagious diseases
A I only
B I and II only
C II and III only
D I, II and III
2) Which of the following methods of disposing waste products can prevent environment pollution?
A Closed burning
B Open burning
C Throwing rubbish into the river
D Collecting rubbish in a particular area
3) Which of the following statements is true about non-biodegradable wastes?
A These wastes cannot be recycled
B These wastes will never be diminished from the environment
C These wastes can be broken down by certain microorganisms
D These wastes produce substances that will be returned to the soil
4) Decaying materials will produce simpler substances such as
A soil and water
B mineral salts only
C nutrients and oxygen
D water and carbon dioxide
5) Which of the following is a type of waste that is carried away form houses?
A Sewage
B Smoke
C Fertilisers
D Toxic materials
6) Which of the following about waste is not true?
A It is a material that is needed by humans
B It can be solid, liquid or gas
C Smoke is a type of waste produced from factories
D. Food remains are solid wase
7) Which of the following can cause acid rain?
I Liquid waste from factories
II Smoke from factories
III Exhaust gas from motor vehicles
A II Only
B I and II only
C II and III only
D I, II and III only
8 ) Which of the following will happen if many people dispose of waste by burning it in the open?
A Water pollution
B Spread of disease
C Air pollution
D Flash floods
9) Which of the following is the most suitable way to dispose of waste that can be decay?
A Recycling
B Throwing into rivers
C Open burning
D Burying in the ground
10) Microorganisms that cause waste to decay are called…
A bacteria
B decomposers
C preservatives
D fungi
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EVALUATION 3
1) The following information shows a situation in a village.
The residents of a village dispose various waste products into a nearby river. At the same time, they also use the water obtained from that particular river for their daily usage.
Which of the following may happen?
I Water pollution
II Food poisioning
III Infection of contagious diseases
A I only
B I and II only
C II and III only
D I, II and III
2) Which of the following methods of disposing waste products can prevent environment pollution?
A Closed burning
B Open burning
C Throwing rubbish into the river
D Collecting rubbish in a particular area
3) Which of the following statements is true about non-biodegradable wastes?
A These wastes cannot be recycled
B These wastes will never be diminished from the environment
C These wastes can be broken down by certain microorganisms
D These wastes produce substances that will be returned to the soil
4) Decaying materials will produce simpler substances such as
A soil and water
B mineral salts only
C nutrients and oxygen
D water and carbon dioxide
5) Which of the following is a type of waste that is carried away form houses?
A Sewage
B Smoke
C Fertilisers
D Toxic materials
6) Which of the following about waste is not true?
A It is a material that is needed by humans
B It can be solid, liquid or gas
C Smoke is a type of waste produced from factories
D. Food remains are solid wase
7) Which of the following can cause acid rain?
I Liquid waste from factories
II Smoke from factories
III Exhaust gas from motor vehicles
A II Only
B I and II only
C II and III only
D I, II and III only
8 ) Which of the following will happen if many people dispose of waste by burning it in the open?
A Water pollution
B Spread of disease
C Air pollution
D Flash floods
9) Which of the following is the most suitable way to dispose of waste that can be decay?
A Recycling
B Throwing into rivers
C Open burning
D Burying in the ground
10) Microorganisms that cause waste to decay are called…
A bacteria
B decomposers
C preservatives
D fungi
Useful worksheets for students...thanks for sharing...^^
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