Question
How much time does light take to reach us from the Sun?
✓
Answer
Sunlight travels at the speed of light. Light emitted from the surface of the Sun has to travel across the vacuum of space to reach our eyes. It takes an average of $8$ minutes and $20$ seconds for the sunlight to travel from the Sun to the Earth.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Briefly mention, which of the following will cause regular reflection of light and which diffuse reflection of light. Marble floor with water spread over it.
Why are thermoplastics not used for making frying pan handles?
Complete the word puzzle.
Down:
$1.$ Species on the verge of extinction.
$2.$ A book carrying information about endangered species.
$5.$ Consequence of deforestation.
Across:
$1.$ Species which have vanished.
$3.$ Species found only in a particular habitat.
$4.$ Variety of plants, animals and microorganisms found in an area.
→Down:
$1.$ Species on the verge of extinction.
$2.$ A book carrying information about endangered species.
$5.$ Consequence of deforestation.
Across:
$1.$ Species which have vanished.
$3.$ Species found only in a particular habitat.
$4.$ Variety of plants, animals and microorganisms found in an area.
Write about the natural methods used to maintain soil fertility.
The figure shown in the diagram is the normal human ear. Observe the diagram carefully and answer the following questions.
(i) Name different parts of human ear.
(ii) What passes messages from the ear to the brain?
(iii) In which part of the ear is the eardrum located?
(i) Name different parts of human ear.
(ii) What passes messages from the ear to the brain?
(iii) In which part of the ear is the eardrum located?
What is an organ? Give two examples of organs.
Differentiate between electrolytes and non-electrolyte.
Make a sketch of the human nerve cell. What function do nerve cells perform?
State two uses of melamine.
During adolescence, the body of boys and girls undergoes certain changes. Given below are few of those changes
(a) Broad shoulders
(b) Wider chests
(c) Wider region below waist
(d) Development of muscles
(e) Development of mammary glands
(f) Growth of facial hair
(g) Acne and pimples on face
(h) Development of sex organs
(i) High-pitched voice
(J) Growth of pubic hair
Categorise these changes into those that occur in boys and those that occur in girls and fill in the table given below.
Body changes during adolescence
(a) Broad shoulders
(b) Wider chests
(c) Wider region below waist
(d) Development of muscles
(e) Development of mammary glands
(f) Growth of facial hair
(g) Acne and pimples on face
(h) Development of sex organs
(i) High-pitched voice
(J) Growth of pubic hair
Categorise these changes into those that occur in boys and those that occur in girls and fill in the table given below.
Body changes during adolescence
| Boys | Girls |