Question
Draw a diagram showing zone containing very hot carbon particles.
✓
Answer
A diagram showing zone containing very hot carbon particles is:
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After observing Fig. answer the following.
$a.$ Read the following statements and label them in the figure:
$i.$ The part which produces female gametes.
$ii.$ The part where development of the baby takes place.
$iii.$ The part through which the developing embryo passes to reach the uterus.
$b.$ Explain the future development of the embryo that would take place after it gets embedded in the uterus.
$X$ is a group of stars which is visible during the summer season in the early part of the night. It can be seen clearly in .the month of April in the northern part of the sky. It resembles a bowl with a handle. It also resembles a big kite with a tail.
$a.$ What is the general name of groups of stars like $X$?
$b.$ Write any two names of $X$.
$c.$ Is it a part of our Solar System?
$d.$ How many bright stars are usually observed in $X$?
$e.$ Which famous star can be located in the sky with the help of $X$?
→$a.$ What is the general name of groups of stars like $X$?
$b.$ Write any two names of $X$.
$c.$ Is it a part of our Solar System?
$d.$ How many bright stars are usually observed in $X$?
$e.$ Which famous star can be located in the sky with the help of $X$?
A pendulum oscillates $40$ times in $4$ seconds. Find its time period and frequency.
→Which of the following articles made of plastics ‘can be recycled’ and which ‘cannot be recycled’? Give
reasons for your choice.
Telephone instruments, Plastic toys, Cooker handles, Plastic covering on electrical wires, Electric switches,
Ballpoint pens, Carry bags, Plastic bottles, Plastic chairs.
reasons for your choice.
Telephone instruments, Plastic toys, Cooker handles, Plastic covering on electrical wires, Electric switches,
Ballpoint pens, Carry bags, Plastic bottles, Plastic chairs.
(1) How do cyclones cause flooding of coastal areas?
(2) How can we protect ourselves during cyclones?
(2) How can we protect ourselves during cyclones?
Draw a diagram to show the reflection of light from a plane mirror. Label the following on the diagram:
$a.$ Plane mirror.
$b.$ Incident ray.
$c.$ Reflected ray.
$d.$ Point of incidence.
$e.$ Angle of reflection.
$f.$ Normal.
$g.$ Angle of incidence.
→$a.$ Plane mirror.
$b.$ Incident ray.
$c.$ Reflected ray.
$d.$ Point of incidence.
$e.$ Angle of reflection.
$f.$ Normal.
$g.$ Angle of incidence.
Give five example each of animals which develop:
$1.$ Inside the mother.
$2.$ Inside eggs which the mother lays.
→$1.$ Inside the mother.
$2.$ Inside eggs which the mother lays.
Explain how sex is determined in the unborn baby.
Write some causes by which water get polluted.
Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.