Solar and Lunar Eclipses
Theme 3 : The Earth - Its Geographical Features (My Watch Tower Social Studies)
Time to Camp - Exercises
A. Choose the correct answers and fill the OMR box.
1. When the Moon does not completely cover the Sun, a _________ eclipse occurs.
a. constant. [ ]
b. total. [ ]
c. annual. [ ]
d. partial. [✓]
2. We experience ________ kinds of eclipses.
a. two. [✓]
b. three. [ ]
c. four. [ ]
d. five. [ ]
3. The Moon casts ________ shadow(s) on the Earth's surface.
a. one. [ ]
b. two. [✓]
c. three. [ ]
d. four. [ ]
4. The word eclipse means to be _________ .
a. visible. [ ]
b. obscured. [✓]
c. show up. [ ]
d. shining. [ ]
5. Partial solar eclipses occur ________ a year.
a. once. [ ]
b. twice. [✓]
c. thrice. [ ]
d. never. [ ]
B. Fill in the blanks.
1. When the Moon comes in between the Earth and the Sun, Solar eclipse occurs.
2. The Moon has no light of its own and reflects the light of the Sun.
3. The umbra covers a smaller part of the Earth while penumbra covers a bigger part of the Earth.
4. Umbra causes a total solar eclipse.
5. Partial lunar eclipse occurs when only a part of the Moon is hidden.
C. Match the columns.
=
|
A |
B |
|---|---|
|
1. partial solar eclipse. |
a. causes partial solar eclipse. [4] |
|
2. total lunar eclipse. |
b. occurs when the Sun and the Moon remain on opposite sides of the
Earth in a straight line. [2] |
|
3. umbra. |
c. occurs twice a year. [1] |
|
4. penumbra. |
d. reflects the light of the Sun. [5] |
|
5. Moon. |
e. dark centre of the Moon’s shadow. [3] |
D. Answer these questions.
1. What is meant by eclipse? How many types of eclipse can we see from the Earth?
= An eclipse occurs when the Sun or the Moon disappears from view, either completely or partly.
We can see two types of eclipses - solar and lunar eclipses from Earth.
2. What causes a total solar eclipse?
= Total solar eclipse happens when the Sun is completely hidden by the shadow of the Moon.
3. Differentiate between umbra and penumbra.
=
|
Umbra |
Penumbra |
|---|---|
|
1. Umbra is darker shadow. |
1. Penumbra is less dark shadow. |
|
2. Umbra is smaller. |
2. Penumbra is bigger. |
|
3. Umbra causes total eclipse. |
3. Penumbra causes partial eclipse. |
4. How do partial and total lunar eclipse occur?
= Total lunar eclipse occurs when the Sun, Moon and the Earth are positioned in a straight line. The Sun and the Moon remain on opposite sides of the Earth. Partial lunar eclipse occurs when only a part of the Moon is hidden.
5. Distinguish between solar and lunar eclipses.
=
|
Solar Eclipse |
Lunar Eclipse |
|---|---|
|
Solar eclipse occurs when the Moon comes between the Earth and the
Sun, thus hiding the Sun. |
Lunar eclipse occurs when the Earth comes between the Sun and the
Moon. |
|
It is not safe to look at the Sun during a solar eclipse. |
There is no harm in looking at a lunar eclipse. |
Picture Study
Look at the picture and answer the questions.
1. What kind of eclipse is being shown here?
= Solar eclipse is being shown here.
2. What are the smaller and the bigger shadows called?
= The smaller shadow is called umbra and the bigger shadow is called the penumbra.
3. When does this type of eclipse occur?
= This type of eclipse occurs when the Moon gets the way of the Sun's light and casts its shadow on the Earth. During the movement along the orbit, the Moon comes between the Sun and the Earth and blocks the light of the Sun from reaching on the Earth.