CBSE Class 8 - Science - Solar System Some Facts (#cbseNotes)

Solar System (Some Facts)

• Biggest Planet : Jupiter

• Smallest Planet : Mercury

• Nearest Planet to Sun : Mercury

• Farthest Planet from Sun : Neptune

CBSE Class 8 - Science - Half Yearly Sample Question Paper (2017-18) (#cbsePapers)

SCIENCE SAMPLE PAPERHALF YEARLY ASSESSMENT (2017-18)CLASS - VIII

TIME-3 hrs                                                                                                    MM-80 Marks

GENERAL INSTRUCTIONS:-
1. All questions are compulsory.
2. This paper contains 4 sections: namely SECTION A- Physics, SECTION B-Chemistry,
SECTION C- Biology and SECTION D- MCQ
3. Please attempt the questions in serial order.

SECTION A (PHYSICS)

Q1. Fill in the blanks                                        (1x7= 7)
a) If light bends towards the normal as it goes from media A to medium B, then medium A is optically ______ than medium B.

b) For a normal eye, the ________ point is infinity.

c) A ______ is an instrument used in submarines to view objects on the surface of the sea.

d) The ______ constellation forms the shape of a hunter.

e) ______ was the first satellite sent up from the earth.

f) The galaxy we live in is called the __________.

g) ______ is the distance between the optical centre and the focus of a lens.

CBSE Class 8 - Science - Half Yearly Examination Paper - (2017-18) (#cbsePapers)

CBSE Class 8 - Science - Half Yearly Examination Paper - (2017-18)

CBSE Class 8 - Science - Term 1 Examination Paper - (2017-18) (#cbsePapers)

CBSE Class 8 - Science - Term 1 Examination Paper - (2017-18)

CBSE Class 10 - Light - Reflection From Mirrors (Worksheet) (#cbseNotes)

Light - Reflection From Mirrors (Worksheet)

1. We get a diminished image with a concave mirror when the object is placed ____.


2. The drivers mirror used in automobiles is ____.


3. The distance of focus F from the pole P is termed as the ..................... of the mirror.


4. Mirror formula is ____.

CBSE Class 9 - Biology - Why Do We Fall iLL? - Design Poster on Dengue (#cbseNotes)

Biology - Why Do We Fall ill? - Design Poster on Dengue

CBSE Class 8 - Physics - Force and Pressure, Friction and Universe (Revision Sheet) (#cbseNotes)

Physics - Force and Pressure, Friction and Universe (Revision Sheet)

1. What is the necessity of pressurized cabins and airplanes?

2. You are provided with two surfaces, one smooth and one rough or uneven. Try to stick a rubber sucker on both the surfaces. Will you succeed in doing so? Give reasons for your answer.

3. Can a scuba diver dive into the ocean wearing ordinary clothes? Why or why not?

4. Why do some people experience nasal bleeding at high altitudes?

5. Explain Why, it is easier to drag a mat on floor when nobody is sitting on it but much more difficult to drag the same mat when a person is sitting on it.

6. Name the type of force in the following cases.

(a) Force exerted between heavenly bodies.
(b) Force to pull a heavy object.
(c) Force that slows down moving objects.
(d) Force due to charged particles.

CBSE Class 10 - Chemistry - Metals and Non-Metals - Alloys Their Compositions and Uses (#cbseNotes)

Alloys - Compositions, Properties and Uses

① Steel
Components: Iron, Carbon

Properties: Hard and Strong

Uses:
- Construction of buildings and bridges,
- manufacture of ships
- manufacture of spare parts for automobiles

☛You may download this blog post as a PDF File

CBSE - Class 8 - Science - Friction (Assignment Sheet) (#cbseNotes)

FRICTION - WORKSHEET

Class 8 - Physics

Multiple Choice Questions (1-10)


1. It is difficult to walk on any oily floor because
a) Floor gets spoiled
b) There is more resistance
c) Force of friction is high
d) Force of friction is very less


2. Spring balance is a device used for measuring the _____________ acting on an object.
a) mass
b) pressure
c) force
d) None of the above

3. A matchstick struck on a matchbox catches fire easily because
a) Friction may cause fire
b) Of chemical reaction
c) Force heated the match stick
d) None of the above

CBSE Class 10 / class 8 - Science - About Human Eye (#cbseNotes)

About Human Eye - Questions and Answers

Human eye can be considered as an optical instrument. Light rays coming from the object to be seen enter the eye through Cornea and fall on the eye lens through the pupil of the eye.



Parts of the human eye are:

Cornea:
The transparent spherical membrane covering the front of the eye.

CBSE Class 8 - Science - Force and Pressure- Assignment (#cbseNotes)

CBSE Class 8 - Science - Force and Pressure- Assignment

Practice Sheet for Science chapter on Force and Pressure (NCERT Class 8)

CBSE Class 8 - Science - Sound Assignment (#cbseNotes)

CBSE Class 8 - Science - Sound Assignment

Practice Sheet for Science chapter on Sound (NCERT Class 8)

CBSE Class 8 - Science - Metals and Non-Metals (Question Bank) (#cbsenotes) #eduvictors

Metals and Non-Metals (Question Bank)

Name the following questions:

1. Name some common non-metals used in our daily life.

2. Hardest naturally occurring substance.

3. Property of metals which make them useful as electric wires.

4. Non – metal which has a metallic lustre.

5. Two non-metals which are soft solids.

6. Non-metals do not conduct electricity or heat except for one. Name it.

7. An allotrope of carbon which is as tensile as steel.

☛You may download this blog post as a PDF File

CBSE Class 8 - Science - Stars and Solar System - Stars vs Planets (#cbseNotes)

DIFFERENCE BETWEEN STARS AND PLANETS

Class 8 - Science - Stars and Solar System

CBSE Class 8 - General Science - Unit Test Paper - 1 (2017-18) (#cbsePapers)

CBSE Class 8 - General Science  - Unit Test Paper - 1 (2017-18) 

Chapters covered:

1. Microorganisms
2. Metals and Non-Metals
3. Force and Pressure

CBSE Class 9 - Force and Laws of Motion - What is Inertia? (#cbseNotes)

What is Inertia? 

CBSE Class 9 - Force and Laws of Motion 

Let's move the rock!

Inertia
It is inherent property of all bodies, by virtue of which it resists or opposes any change to it's present state of rest or of uniform motion. It varies directly as mass of the body.

Inertia of a body is of three types:

① Inertia of rest

It is in ability of a body to change by itself or if state of rest. This means a body at rest remains at rest and cannot start moving on its own.

CBSE Class 8 - Science Periodic Test-1 (2017-18) (#cbseNotes)

CBSE Class 8 - Science Periodic Test-1 (2017-18) 

Questions asked in the Q. Paper are from the following chapters:

1. Crop Production and Management
2. Coal and Petroleum
3. Combustion and Flame
4. Universe

CBSE Class 8 - Science - Synthetic Fibres - Know Your Plastic Bottle (#cbseNotes)

Know Your Plastic Bottle

Class 8 - Science - Synthetic Fibres

Resin Coding System (Image Credits: Openclipart)

In 1988, the Plastic Industry Association developed the Resin Identification Codes (1-7), a set of symbols appearing on plastic products that identify the plastic resin out of which the product is made. This help the workers to sort out various plastic bottles in order to recyle or reuse them or not.

Here is a table of resin codes that are used to get information about the application of plastic, its safety and re-usability.

♳ PET/PETE
Polymer: Polythene Terephtalate
Common Applications: Soft Drink, Water and Salad Dressing bottles, peanut butter and jam jars.
Safe for Alimentary Use: Safe One Type Use.
Reusable: No

CBSE Class 8 - Science Periodic Assessment (2017) - Crop Production and Microorganisms (#cbseNotes)

CBSE Class 8 - Science Periodic Assessment (2017) - Crop Production and Microorganisms 

Sample Question Paper with some answers given below.

CBSE Class 8 - Science - Friction (Assignment) (#cbseNotes)

Friction (Assignment)

Q1: Name the following:

⒜  Type of surfaces that produces minimum friction _____________

⒝  Type of surfaces that produce maximum friction  _____________

⒞  A shape that reduces drag _____________

⒟ Friction with minimum magnetic magnitude _____________

⒠  Friction with maximum magnitude _____________

⒡  Two types of fluids _____________