Showing posts with label class7-science. Show all posts
Showing posts with label class7-science. Show all posts

Monday, 29 April 2019

Amazing Human Body - Quick Facts (#humanbody)(#eduvictors)

Amazing Human Body - Quick Facts 

Amazing Human Body - Quick Facts (#humanbody)(#eduvictors)

1.  The hardest bone in the human body is the jawbone.

2.  The number of eye blinks varies greatly from about 29 blinks each minute if you are talking to someone to only 4 blinks each minute if you are reading.

3.  The average human blinks 25 times per minute.

4.  A nail takes around 6 months to grow from base to the tip.

5.  Each second 10,000,000 cells die and are replaced in your body.

Wednesday, 13 February 2019

CBSE Class 7 - Science - Chapter 17 - Forests - Our Lifeline (Worksheet)(#cbsenotes)(#eduvictors)

Science - Chapter 17 - Forests
- Our Lifeline 

CBSE Class 7 - Science - Chapter 17 - Forests - Our Lifeline (Worksheet)(#cbsenotes)(#eduvictors)

(Worksheet)

Fill in the blanks with suitable words:

1. _________ is the covering of large trees that serve as a roof to shelter an area or other plants in forests.


2. ________ is an ecosystem comprising various plants, animals and micro-organisms.


3. In a forest, the _______ form the top layer, which is followed by shrubs, and then _______, which form the lowermost layer of vegetation.


4. In the forest, there is an interaction between soil, _____, air and living organisms.


5. Forests protect the soil from ________.


Tuesday, 18 December 2018

CBSE Class 7 - Science - Chapter 8 - Winds, Storms and Cyclones (Worksheet)(#eduvictors)(#cbsenotes)

Class 7 - Science 

Chapter 8 - Winds, Storms and Cyclones

Worksheet

CBSE Class 7 - Science - Chapter 8 - Winds, Storms and Cyclones (Worksheet)(#eduvictors)(#cbsenotes)


Fill the missing word in the blank spaces in the following statements:

1. Wind is _________ air.


2. Winds are generated due to ________ heating on the earth.


3. Near the earth’s surface __________air rises up whereas ___________ air comes down.


4. Air moves from a region of _________ pressure to a region of ___________ pressure.

Wednesday, 5 December 2018

CBSE Class 6 - 10 - Scientific Discoveries and Inventions Quiz (#sciencequiz)(#eduvictors)

Scientific Discoveries and Inventions Quiz

CBSE Class 6 - 10 - Scientific Discoveries and Inventions Quiz (#sciencequiz)(#eduvictors)

Q1: Who discovered the first antibiotic?

(a) W Fleming
(b) C Waksman
(c) Louis Pasteur
(d) A Fleming


Q2: Who invented the Safety razor?

(a) Gillette
(b) Nikola Tesla
(c) Steve Job
(d) Lar Strauss


Q3: X–rays were discovered by

(a) Edison
(b) Roentgen
(c) Marie Curie
(d) Van Lue


Monday, 16 July 2018

Class 6/7/8/9/10 Entrance Tests/NTSE/CTET/NDA - General Science Quiz (2018) (#eduvictors)

General Science Quiz 

Class 6/7/8/9/10 Entrance Tests/NTSE/CTET/NDA - General Science Quiz (2018) (#eduvictors)

Q1: Which of the following is not example bio-mass energy source?

(a) Wood
(b) Gobar gas
(c) Atomic energy
(d) Coal


Q2: The scientific study of earthquakes is known as 

(a) Seismology
(b) Cosmology
(c) Ecology
(d) Pathology


Q3: Which of the following is a plant hormone?

(a) Insulin
(b) Thyroxin
(c) Estrogen
(d) Cytokinin


Sunday, 1 April 2018

Class 7/8/10 - Forests Our Life Line or Natural Resources - Importance of Forest Resources (#cbsenotes)(#eduvictors)

Natural Resources - Importance of Forest Resources

Class 7/8/10 - Forests Our Life Line or Natural Resources - Importance of Forest Resources (#cbsenotes)(#eduvictors)

The importance of forest resources can be described  as follows:

1. Ecological Balance
2. Renewable Natural Resources
3. Eco-system
4. Economic Development
5. Environment Quality
6. Safeguard against Pollution
7. Soil Conservation
8. Wind and Soil Erosion
9. Check the Extension Balance
10. Maintains Ecological Balance
11. Attracts Rainfall
12. Control Floods
13. Connects to our Cultural and Civilization
14. Supply of Raw Material


1. Ecological Balance: 

Forests and wildlife are essential to maintain ecological balance of an area.


Friday, 22 December 2017

Class 7/8/9/10 - Science - Clean Air: From Donora to Delhi - Can we breathe safely? (#eduvictors)(#cbse-notes)

Clean Air: From Donora to Delhi -
Can we breathe safely?

Class 7/8/9/10 - Science - Clean Air: From Donora to Delhi - Can we breathe safely? (#eduvictors)(#cbse-notes)

With the industrial revolution, the human mankind experienced the air pollution for the first time and realized it as a potential threat to human life. The black smoke of locomotives, factories from the industrial towns of England blackened its cities.

In 1950s, the smoke of industrialized Pennsylvania valley in USA made the air murkier. In the small town of Donora, population 14,000, residents suffered eye, nose, and throat irritation and breathing difficulties resulting in 20 deaths.

In 2008, on the 60th anniversary of the event, the town opened the Donora Smog Museum with the
slogan "Clean Air Starts Here".

Monday, 15 May 2017

CBSE Class 7 Science - CH1 Nutrition In Plants - Questions and Answers (#cbsenotes)

Nutrition In Plants 

Questions and Answers
Class 7 Science

CBSE Class 7 Science - CH1 Nutrition In Plants - Questions and Answers (#cbsenotes)

Q1: Define Nutrition.

Answer: The process of taking in food and its utilization by the body is called nutrition.


Q2: What are nutrients? Name the different nutrients.

Answer: Nutrients are chemical substances present in our food that provide energy and other materials required by the body to live and grow.

Examples of nutrients are:

Carbohydrates
Proteins
Fats
Minerals
Vitamins



Q3: Name the two modes of nutrition.

Answer:
Autotrophic
Heterotrophic


Saturday, 29 October 2016

Class 7 - Science - Weather, Climate and Adaptation of Animals to Climate (MCQs)

 Weather, Climate and
Adaptation of Animals to Climate 

Class 7 - Science - Weather, Climate and Adaptation of Animals to Climate (MCQs)
Protect Our Environment

Class 7 - Science - NCERT Exemlar MCQs Answers



Q1: The maximum and minimum temperature displayed daily in the weather bulletin refer to the –

(a) highest day temperature and lowest night temperature of the day.
(b) highest day temperature and highest night temperature of the month.
(c) temperature recorded at 12 noon and at mid night (00.00 hrs).
(d) average highest temperature of day and average lowest temperature of night.




Q2: Paheli went to a wildlife sanctuary where she saw dense vegetation of trees, shrubs, herbs and also a variety of animals like monkeys, birds, elephants, snakes, frogs, etc. The most likely location of this sanctuary is in the –

(a) temperate region
(b) tropical region
(c) polar region
(d) coastal region




Q3: Out of the given definitions, which is the most appropriate definition of climate?

(a) Changes in weather conditions in a year.
(b) Average weather pattern of many years.
(c) Change in weather pattern in a few years.
(d) Weather conditions during summer.



Q4: Which of the following briefly describes the desert climate?

(a) Hot and humid
(b) Dry and humid
(c) Hot and dry
(d) Hot and wet



Thursday, 3 March 2016

CBSE Class 7 - Science - CH17 - Forests: Our Lifeline (MCQs)

Forests: Our Lifeline


CBSE Class 7 - Science - CH17 - Forests: Our Lifeline (MCQs)
Can You Identify Trees by looking at these leaves?
(Answer given below)

MCQs


Q1: The covering of large trees that serve as a roof to shelter an area or other plants in forests is called ___________.

(a) Canopy
(b) Crown
(c) Carnival
(d) none of these



Q2: Green plants synthesize their food by the process of __________

(a) Respiration
(b) Photosynthesis
(c) Crown
(d) Reproduction



Q3: Green plants are also referred as _________

(a) Consumers
(b) Producers
(c) Decomposers
(d) Herbivores


Q4: Tigers, Lions, Leopards belong to which of the following group?

(a) Producers
(b) Herbivores
(c) Decomposers
(d) Carnivores

Tuesday, 16 February 2016

CBSE Class 7 - Science Quiz (2016)

SCIENCE QUIZ

CBSE Class 7 - Science Quiz (2016)

MCQs based NCERT Class 7 Science Chapters


Q1: The vessels which carry carbon dioxide rich blood from all parts of the body back to the heart are called 

(a) Veins
(b) Arteries
(c) Capillaries
(d) Valves



Q2: There are some chemicals secreted by an insect to attract attention of other members of species. These are called

(a) vitamins
(b) hormones
(c) fibronin
(d) pheromones



Q3: Which gas is produced when sludge is digested?

(a) Methane
(b) Ethane
(c) Propane
(d) Butane



Q4: What do we call the network of several food chains connecting each other?

(a) Food Web
(b) Food Chain
(c) Food Cycle
(d) Trophic Level



Q5: Nagma was playing basketball with her team mates. Just after the game her pulse rate will

(a) increase
(b) decrease
(c) remains same
(d) none of these

Wednesday, 30 December 2015

CBSE Class 7 - Science - CH16 - Water - A Precious Resource (MCQs)

Water - A Precious Resource

MCQs based on NCERT Chapter
CBSE Class 7 - Science - CH16 - Water - A Precious Resource (MCQs)
जल है तो कल है
image credits: openclipart


Q1: Tubewells and Springs are the examples of 

(a) surface water
(b) underground water
(c) potable water
(d) all of these


Q2: Which of the following will not help in conservation of water?

(a) drip irrigation
(b) planting more trees
(c) water treatment plant
(d) cutting trees to check water loss due to transpiration



Q3: Ground water accumulates between layers of hard rock. It is known as

(a) aquifer
(b) pond
(c) water table
(d) surface water



Q4: Which of the following is the reason for depletion of water table?

(a) Planting more trees
(b) Heavy Rainfall
(c) Industrialization
(d) Rainwater harvesting


Monday, 21 December 2015

CBSE Class 7 - Science - CH 8 - Wastewater Story (MCQs)

Wastewater Story 

Waster Water Treatment Workflow
Leonard G. at English Wikipedia
[CC BY-SA 2.5 (http://creativecommons.org/licenses/by-sa/2.5)],
via Wikimedia Commons

MCQs based on NCERT Chapter


Q1: The light materials which float during waste water treatment is

(a) sludge
(b) scum
(c) sewerage
(d) biogas



Q2: Which of the following is produced during waste water treatment?

(a) sludge
(b) biogas
(c) both biogas and sludge
(d) none of these



Q3: Contaminated water disease is

(a) gastroenteritis
(b) malaria
(c) flu
(d) none of these



Q4: Which of the following is a part of waste water treatment plant?

(a) clarifier
(b) aeration tank
(c) vertical bars
(d) all of these

Friday, 18 September 2015

CBSE Class 7 - Science - Multiple Choice Questions

Class 7 - Science - Multiple Choice Questions

(MCQs asked in SA1 Q Paper)
CBSE Class 7 - Science - Multiple Choice Questions


Q1: Which part of the plant takes in carbon dioxide from the air for photosynthesis?

(a) Root Hair
(b) Stomata
(c) Leaf veins
(d) Sepals


Q2: Which animal does not yield wool?

(a) Yak
(b) Camel
(c) Goat
(d) Woolly dog


Q3: On Amoeba, food procuring structure is

(a) tongue
(b) tentacle
(c) pseudopodium
(d) radula


Q4: An iron weight at 45 degree Celsius is dipped in a bucket containing water at 45 degree Celsius. The heat will

(a) flow from water to iron weight
(b) flow from iron weight to water
(c) not flow between them
(d) flow and increase the temperature


Q5: A solution turns red litmus paper blue. If a drop of phenolphthalein is added to it.

Thursday, 20 August 2015

CBSE Class 7 Science CH15 - Light (MCQs)

Light

CBSE Class 7 Science CH15 - Light  (MCQs)
Do you know a longer lasting rainbow? Read below to find the answer.

MCQs based on NCERT Chapter


Q1: Rectilinear propagation of light means,...

(a) Light can bend like curves.
(b) Light travels in straight line.
(c) Light bounces back by a medium when it falls on the medium.
(d) Light gives us sense of vision.




Q2: Shadows formation shows that light

(a) can travel in vacuum
(b) travels in straight lines
(c) exhibits wave nature.
(d) carries energy.



Q3: Images that cannot be captured on a screen are called _________.

(a) virtual images
(b) real images
(c) inverted images
(d) reflected images



Q4: Which one of the following does NOT use concave mirror?

(a) magnifier mirror by dentist
(b) reflector in flashlight
(c) solar heater
(d) rear view mirror in cars



Sunday, 2 August 2015

CBSE Class 7 - Science - CH 11 - Transportation In Animals and Plants (MCQs)

Transportation In Animals and Plants 

CBSE Class 7 - Science - CH 11 - Transportation In Animals and Plants (MCQs)
Human Heart Working

MCQs based on NCERT chapter Class 7 Science


Q1: Name the pigment which gives red colour to the blood in mammals.

(a) Globulin
(b) Haemoglobin
(c) Plasma
(d) Platelets



Q2: The fluid part of the blood is called _______

(a) RBCs
(b) Plasma
(c) Haemoglobin
(d) WBCs



Q3: Which component of blood in mammals build up defense against harmful germs enter in the body?

(a) RBCs
(b) Plasma
(c) Platelets
(d) WBCs



Q4: Upper chambers of a human heart are called?

(a) atria
(b) ventricles
(c) pulmunory vein
(d) vena cava

Sunday, 21 June 2015

CBSE Class 7 Science CH1 - Nutrition In Plants (MCQs)

Nutrition In Plants

CBSE Class 7 Science CH1 - Nutrition In Plants (MCQs)
Pitcher Plant: A carnivorous plant
image credits: wikipedia

MCQs
Q1: Which of the following is not an end product of photosynthesis?

(a) Oxygen
(b) Carbon dioxide
(c) Water
(d) Glucose

Q2: Which of the following organisms gets its food from dead and decaying matter?

(a) Algae
(b) Fungi
(c) Amoeba
(d) Insectivorous plants

Q3: Which of the following are autotrophs?

(a) all plants
(b) Green plants
(c) All animals
(d) Unicellular organisms

Q4: Photosynthesis is not possible in the absence of ________.

(a) Guard cells
(b) Chlorophyll
(c) Vacuole
(d) Space between cells

Q5: The associations of organism where they live together and share shelter and nutrients is known as ___________.

Friday, 19 June 2015

CBSE Class 7 Science CH10 Respiration In Organisms (MCQs)

Respiration In Organisms

Human Respiratory System
image credits: wikipedia

MCQs

Q1: Breathing is a ________ process while respiration is a _______ process.

(a) physical, chemical
(b) chemical, physical
(c) physical, physical
(d) chemical, chemical

Q2: Organisms which respire in absence of air are called _________. 

(a) microbes
(b) anaerobes
(c) aerobes
(d) none of these

Q3: Plants breathe through tiny pores in the leaves called ________.

(a) leaf blade
(b) trachea
(c) pores
(d) stomata

Q4: In earthworm, the exchange of gases occurs through ________.

(a) lungs
(b) gills
(c) moist skin
(d) tracheae

Q5: During Inspiration or Inhalation, inside lungs