Lesson Plan of Static Electricity
General Science Grade V
Students’ Learning Outcomes
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| Explain the production of static electrical charges inwards some mutual materials. · Explain the phenomenon of lightening. |
Information for Teachers
· All materials are made of atoms which incorporate protons, electrons as well as neutrons.
· Protons choose positive charges, electrons choose negative charges as well as neutrons choose no charge.
· The protons as well as electrons are equal inwards numbers inwards an atom. Therefore internet accuse on an atom is zero.
· The electrons are loosely attached to the atom.
· When 2 objects are rubbed together, some electrons from 1 object displace onto the other.
· Thus, the let on of electrons on 1 object becomes greater than the let on of protons inwards it, so negative accuse appears on it.
· The let on of electrons left on the other object becomes less than the let on of protons on it, so positive accuse appears on it.
· There is attraction betwixt 2 oppositely charged objects.
· There is repulsion betwixt 2 similarly charged objects.
· When oppositely charged clouds come upwards about each other, they collide amongst each other due to non bad attraction as well as thence a big spark is produced. It is called equally lightning.
Material / Resources
Balloons, thread, stand, woolen cloth, plastic comb, metallic element key, textbook
Worm upwards Activity
· Ask the students; choose they e'er observed that when a plastic comb is rubbed through pilus as well as brought nigh little newspaper bits, it begins attracting these newspaper bits.
(Expected response: Yes)
· Ask: choose they observed that a woolen trouser oftentimes sticks to the pilus on their legs?
(Expected response: Yes)
· Now say the students that when a plastic comb is rubbed through hair, it becomes charged as well as this starts attracting pilus as well as newspaper bits. Similarly, the trouser on rubbing amongst trunk pilus equally good becomes charged as well as starts attracting body(hair) as well as sticks to legs. Tell the students that many such objects larn accuse when rubbed amongst each other. For example:
---When drinking glass rod is rubbed amongst silk cloth, it becomes charged.
---When an ebonite rod is rubbed amongst woolen cloth, it equally good gets charged.
Development
Activity 1
· Divide the course of written report into suitable groups.
· Ask a pupil from each grouping to suspend an inflated balloon amongst the stand upwards yesteryear way of a thread.
· Direct him to choose a slice of woolen fabric nigh it. Ask: Does it attract the balloon towards it?
(Expected response: No)
· Ask the pupil to rub the balloon vigorously amongst a woolen fabric as well as so take away it away.
· Direct him to choose the fabric about the balloon slowly. Ask the student: Does the fabric attract the balloon this time?
(Expected response: Yes)
· Ask the students: Why does the fabric attract balloon subsequently rubbing?
(Expected response: because the fabric as well as balloon choose acquired contrary charges)
· Ask the students to suspend 2 inflated balloons amongst the stands amongst the tending of thread as well as house them at some distance from each other.
· Ask them to choose the balloons closer yesteryear moving the stands.
· Ask them: Do the balloons attract or repel each other or goose egg happens?
(Expected response: Nothing happen)
· Ask them to rub each balloon amongst woolen fabric as well as choose them closer 1 time to a greater extent than as well as discovery their movements.
· Ask them: Do they attract or repel each other?
(Expected response: They attract each other because they choose contrary charges.)
· After these activities explicate the sweat of attraction or repulsion of balloons.
· Tell them that when surely objects are rubbed amongst each other, they cash inwards one's chips charged.
· When 2 objects are rubbed some electrons from 1 object displace onto the other. In this way the let on of electrons on 1 object becomes greater than protons inwards it as well as thence it becomes negatively charged. On the other hand, the let on of electrons on the other object becomes less than protons inwards it as well as thence it becomes positively charged.
Activity2
(This activity should live performed inwards a nighttime room)
· Give each grouping a plastic comb, a woolen cloth, an atomic let on 26 boom or key.
· Ask the students to accuse the comb yesteryear rubbing it amongst the woolen cloth.
· Ask them to touching on the charged comb gently amongst a metallic element primal as well as observe.
· Ask the students: What practice they see?
(Expected response: Influenza A virus subtype H5N1 spark)
· Explain that when charged comb is brought closer to the key, contrary accuse appears on the nigh part of the key. Spark is produced when oppositely charged objects touching on each other.
· Explain that similarly when oppositely charged clouds come upwards closer to each other, they collide due to non bad attraction betwixt them as well as thence a big spark is produced. It is called lightning.
Sum up/ Conclusion
· The accuse is the basic holding of matter.
· The charges are of 2 types. One type is called positive as well as the other negative.
· On rubbing 2 objects, positive accuse appears on 1 object as well as negative accuse on the other object.
· Opposite charges attract each other as well as like charges repel each other
· Spark is produced when 2 oppositely charged objects touching on each other.
Assessment
· To assess the agreement of the students inquire the next questions:
-----How tin an inflated balloon live charged?
-----why practice positive or negative charges look on the objects on rubbing?
-----How does lightning occur?
Follow up
· Ask the students to position some objects that tin live charged than the ones used inwards the course of written report activities.
· Ask them to write downwards an activity to accuse 1 of the objects that they choose identified.
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