# Winter Holiday Homework (2015-2016) Class-VIII

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**THE JAIN INTERNATIONAL SCHOOL.**

** Winter Holiday Homework (2015-2016)**

** Class -VIII**

**English:** 1. Learn the poem-‘ Gathering Leaves’

2. Write a story in your Eng. Notebook based on the framework given below-

**Story writing**- One day Hina---late to school---teacher scolds---Hina started crying---teacher asked to call parents---Hina sad ---teacher felt bad---excused her---Hina tells the reason--- apologises---told to be more careful in future.

**Hindi:** Worksheet given – Do in your C.W. Note-book.

**Maths:** worksheet given-Do in your C.W. Note-book.

**SOLVE**

1-A diagonal of a quadrilateral is 26 cm and the perpendiculars drawn to it, from the opposite vertices are 12.8 cm and 11.2 cm. Find the area of the quadrilateral.

2- Find the area of a parallelogram, one of whose sides is 32 cm and its distance from the opposite side is 16.5 cm.

3- One side of a parallelogram is 18 cm long and its area 153 cm square. Find the distance of the given side from its opposite side.

4- Find the area of the rhombuses whose dimensions are

(i) Side = 12 cm, altitude = 7.5 cm.

(ii) Side = 2 dm, altitude = 12.6 cm.

5- The area of a rhombus is 119 cm. square and its perimeter is 56 cm. Find its altitude.

6- The area of a rhombus is 148.8 cm square. If one of its diagonals is 19.2 cm. Find the length of the other diagonal.

7- The height of a parallelogram is one – third of the base. If the area is 108 cm square. Find the base and the height.

8- The area of a trapezium is 1586 cm square and the distance between its parallel sides is 26 cm. If one of the parallel sides is 84 cm, Find the other.

9- The parallel sides of a trapezium are 20 cm and 10 cm. Its nonparallel sides are both equal, each being 13 cm. Find the area of trapezium.

10- The area of a trapezium is 180 cm square and its height is 9 cm. if one of the parallel sides is longer than the other by 6cm, find the two parallel sides.

**Science:** Worksheet given – Do in the C.W. Note-book.

**S.St.:** 1.Scrap book page no.-203 2.Map work page no.193 3 .Learn the lessons for SA2

** Subject: Science** **Topic: Holiday homework**

Chemistry

- Write any two names of chemical that can be added to purify water?
- What are the various gasses present in air and their percentage?
- How can we prevent water from being polluted?
- Explain the effects of water pollution on living being?
- What are the different methods used to purify water in the city?
- Write a note on green house effects?
- What is acid rain and what are the effects of acid rain?
- What are the effects of impurities on electrical conductivity of water?
- Why salts like sodium chloride (NaCl) in the solid form do not conduct electricity?

10. Name the charge carriers present in liquid?

Biology

- Name all the endocrine glands, their location and hormones secreted by them ?
- Write any 5 emotions that are very common in the age of adolescence?
- Name any 3 physical changes that occur only in male during adolescence?
- Mention any two physical changes that occur only on the female during the age of adolescence?
- Why we should eat nutrient and balanced diet during the age of adolescence?
- How we will keep our genital organ clean? (three to four points )
- Write all the steps involved in the process of fertilization?
- Write the function of sperm duct, penis, oviduct, vagina, and urethra?
- Draw the life cycle of frog and butterfly?

10. Define the term abortion, female infanticide, metamorphosis, sperm, ovum, and semen?

** **

**Physics**

1) Name the two charged particles in an atom?

2) Define seismology ?

3) Name the most common scale used to measure the magnitude of an earthquake ?

4) What is lateral inversion ?

5) What is the blind spot in an eye ?

6) State the laws of reflection ?

7) Name the brightest star in the night sky ?

8) Name the first satellite sent by India into space ?

9) Name the phase of the moon in which a very small portion of the moon is visible from the earth ?

10) Define epicenter ?