Page 5 - Active Science 5 Ebook and Activity

Practise Time
A. Tick the correct option.
a. seed
1. The food for the growth of a new plant is stored in the______________.

c. seed coat
b. embryo
d. cotyledons

2. Water is needed for germination because ______________.

b. it makes the seed swell up
c. it kills the seed
a. it allows stored food to become available for use by embryo
d. it cleans the seed
a. radicle

3. The small root emerging from a germinating seed is called a ______________.

b. plumule
b. cotyledon Practice Time
a. Potato d. seed coat

4. Which one of the following grows from underground stem?

c. Bryophyllum b. Sugar cane A combination of objectives and descriptive questions are

5. Rabi crops are usually grown during the months of ______________.
d. Sweet potato

b. November–April
a. June – October
b. November – January included to test the knowledge and understanding of the
d. June – August
1. Dandelion
B. Match the following.

2. Cauliflower
3. Paddy a. dispersal by water students. A large and variety of exercises ensure interesting

4. Scion b. the part of the stem that is cut
c. Rabi crop
5. Lotus d. Kharif crop and brain storming practice session.
C. Fill in the blanks. e. dispersal by wind
1. Plants supply ______________.

3. The process through which a seed is taken away from the mother plant to a suitable place

for germination is called as ______________.
2. The seed coat allows ______________ to enter the seed which is required for germination.
5. Wheat and beans are planted in ______________.
4. The large scale production of crops for food is called ______________. (irrigation/agriculture)
18 6. ______________ seeds have one cotyledon.
Active Science-5
Life Skills Activity
The aim of studies
Think Hard should be its valuable 2. When does a solar eclipse occur? Explain with a diagram.
3. When does a lunar eclipse occur? Explain with a diagram.
4. Tabulate the differences between spring tide and neap tide.
The section encourages the students application in • Why does a solar eclipse occur only on a new moon day?
Think Hard
• Why is life not possible on moon?
to think beyond textual matter and everyday life. This • The moon has no light of its own, but it still shines. Explain.
Project Work
connect the concepts with their daily section is an initiative 1. Make a model of solar system using clay to represent different planets and other
objects in the solar system.
2. Draw and label the given diagrams in your scrap book.
life. This helps to enhance their higher to help students to a. Lunar eclipse b. Solar eclipse c. Solar system
You can demonstrate the solar eclipse and lunar eclipse in class room. For that you need a torch
order thinking skills. apply their knowledge Life Skills Activity
light (acting as the sun), a football (acting as the earth) and a table tennis ball (acting as the
moon). See the diagram below and perform the activity to demonstrate solar eclipse and lunar
for the benefit of all eclipse.
living things.
Scientists who study about the sun, the moon, the stars and other heavenly bodies are known
Research and Development
as astronomers and this branch of science is known as astronomy. Is it possible to predict
the time and date of any eclipse if we know about the movement of the sun, the moon and the
earth? A book called the Panchang is used in India for such calculation and predictions. Find
out more about it.
• Attempt an activity on http://www.sciencekids.co.nz/gamesactivities/earthsunmoon.html
Net Work
• To learn more about solar system, visit http://www.kidsastronomy.com/solar_system.htm

• To know more about solar system, log on to http://space-facts.com/solar-system/
96 Active Science-5
Project Work
It enforces action oriented learning,
in students. Given in each chapter, it
broadens the outcome of classroom
learning.
If you have a kitchen garden at home, what will you use – chemical fertilizers or manure – to
Think Hard
enrich the soil fertility? Justify your answer.
Break an egg carefully to preserve the egg shell and write on it ‘root power’ with a marker. Place
Project Work
a teaspoonful of soil in egg shell. Then place some germinated seeds in the soil.
Place the egg shell in a warm place and keep the soil moist. In less than a week, the roots will Research and Development
come out through the egg shell. Observe the power of roots in the field.
Germinate gram seeds and castor bean seeds. Note the difference in their mode of germination.
Life Skills Activity Research is an inherent part of science. It unfolds the
Research and Development
Take a potato. You can see eyes on it. They are the buds. Cut the potato into small pieces such mystery of nature and brings new challenges. It is only
that some pieces contain a bud and some do not. Spread some cotton on a tray and moisten it.
by doing research, the concepts of science can be
Place the potato pieces on the cotton. understood.
Note where the pieces with buds are placed. Observe the changes taking place in these potato
pieces over the next two days. Make sure that the cotton is kept moist. Which are the potato
pieces that give rise to fresh shoots? What do you conclude from this activity?
Plan a visit to the school garden and speak to the gardener. Find out how soil is prepared for
Field Trip
pots in the school.
• Observe how plants change as they grow by logging on to http://www.pbs.org/parents/sid/
Net Work

• Log on to the following link for playing a sequencing game http://www.woojr.com/plant-life/how-
activities/growing-plants/
do-plants-grow-color/
20 Active Science-5
Field Trip
Field Trip suggestion provides an opportunity to the students to take their lessons
beyond the confines of their classroom.