(628)-272-0788 info@etutorworld.com
Select Page

Electricity and Magnetism

Grade 7 Science Worksheets

Electricity and Magnetism

It is a phenomenon associated with stationary or moving electric charges. Electric charge is a fundamental property of matter and is borne by elementary particles. In electricity the particle involved is the electron, which carries a charge, as negative. Electricity is not a form of energy. Instead, it is said that an electric current is a flow of “electricity”.

Electricity and Magnetism – Grade 7 Science Worksheets

Schedule a Free session to clear worksheet doubts

No credit card required, no obligation to purchase.
Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!

Coulomb’s Law

Static electricity is an electric phenomenon in which charged particles are transferred from one body to another.

For example, if two objects are rubbed together, especially if the objects are insulators and the surrounding air is dry, the objects acquire equal and opposite charges and an attractive force develops between them.The object that loses electrons becomes positively charged, and the other becomes negatively charged.

When one object is rubbed against another, static electricity is created. This is because the rubbing creates a negative charge that is carried by electrons. These electrons build up to produce static electricity.

Electricity and Magnetism – Grade 7 Science Worksheets

Some other examples are – 

  • Rubbing one’s feet on the carpet
  • Clothes tumbling in the dryer
Electricity and Magnetism – Grade 7 Science Worksheets

Learn more about Electricity and Magnetism and other important topics with 7th Grade Science Tutoring at eTutorWorld. Our expert science tutors break down the topics through interactive one-to-one sessions. We also offer the advantage of customized lesson plans, flexible schedules and convenience of learning from home.

eTutorWorld Understands Math Tutoring | Online Math Worksheets are Important Tools

Understanding graphs, charts, and opinion polls in a newspaper, for calculating house and car payments, and for choosing a long-distance telephone service are impossible without strong math skills …and the only way to develop strong math skills is by constant practice.

‘Practice makes a man perfect’ holds true for no other field better than for math. A middle or high school student must set aside a minimum of an hour for math every day. Other than textbooks, worksheets help you revise and understand concepts better.

Our expert tutors prepare online maths worksheets that are age and grade-appropriate. Grade-wise math worksheets for Elementary Math, Arithmetic, Pre-Algebra, Algebra, Geometry, Trigonometry, Statistics, Pre-Calculus and Calculus can be solved to improve math skills, to get ahead or to even catch up.

You may download these FREE online math worksheets in the PDF format, and then print and email us their solutions for a free evaluation and analysis by eTutorworld’smath expert tutors.

You may solve these worksheets by yourself or with your peers while studying together.

The Answer Key at the end of each worksheet allows for a self-evaluation.

Personalized Online Tutoring

eTutorWorld offers affordable one-on-one live tutoring over the web for Grades K-12, Test Prep help for Standardized tests like SCAT, CogAT, MAP, SSAT, SAT, ACT, ISEE and AP. You may schedule online tutoring lessons at your personal scheduled times, all with a Money-Back Guarantee. The first one-on-one online tutoring lesson is always FREE, no purchase obligation, no credit card required.

For answers/solutions to any question or to learn concepts, take a FREE CLASS.

No credit card required, no obligation to purchase.
Just book a free class to meet a tutor and get help on any topic you want!

Magnets and Electricity                                                                     

In most objects, all the atoms are in balance with half of the electrons rotating in one direction and half rotating in the other direction.

Magnets are quite different with the atoms at one end having electrons spinning in one direction while those at the other end spin in the opposite direction.

We call one end of the magnet the North (N) Pole and the other end the South (S) Pole.

The force of the magnetic field flows from the North Pole to the South  Pole. If you hold two magnets close to each other you would find that if you try to push the two North poles (N) or the two South poles (S) together, they repel each other. If you put the North Pole (N) near the South Pole(S), they attract each other.

Like poles repel, unlike poles attract.

Electricity and Magnetism – Grade 7 Science Worksheets

Electricity can make magnets

Each electron is surrounded by a force called an electric field. When an electron moves, it creates a second field – a magnetic field. When electrons are made to flow in a current through a conductor, such as a piece of metal or a coil of wire, the conductor becomes a temporary magnet – an electromagnet.

What is the relationship between electricity and magnetism?

Electric current flowing through the wire produces magnetic field. The direction of magnetic field depends on the direction of electric current. A changing magnetic field produces an electric current in a wire. The relationship between electricity and magnetism is called electromagnetism.

Magnets can make Electricity

A magnetic field pulls and pushes electrons in some objects near them to make them move. For example, in copper metal electrons those are freely movable. When a magnet is swiped along quickly through a copper wire, electrons move and so electricity is made.

When current flows through any wire it creates a magnetic field around the wire as it goes along. Generally it’s quite weak because a single wire is not strong enough to pickup metal objects. Here “I”Is the current and “B” is the magnetic field.

Electrostatics, the study of electric charges at rest, was initially found by the ancient Romans who observed how a comb after brushing would attract particles. It is known that electric charges are in two different forms, positive charges and negative charges. Like charges repel each other, and differing charges attract.

The force that attract positive charges to negative charges weakens with distance, but is very strong — up to 40 times stronger than the pull of gravity at the surface of the earth. This fact can easily be described by a small magnet that can hold or suspend an object. The small magnet exerts a force at least equal to the gravitational from the entire Earth.

Check Point

A. Fill in the blanks –

  1. In electricity the particle involved is the ………….. This carries a charge, as negative.
  2. ………….. electricity is an electric phenomenon in which charged particles are transferred from one body to another.
  3. The force of the ………….. flows from the North Pole to the South Pole.
  4. When electrons are made to flow in a current through a conductor, such as a piece of metal or a coil of wire, the conductor becomes a temporary magnet,  an …………..
  5. ………….. the study of electric charges at rest.

 

B. State True or False –

  1. Electricity is a form of energy.
  2. Like poles attract, unlike poles repel
  3. The force of the magnetic field flows from the North Pole to the South Pole.
  4. Each electron is surrounded by a force called a magnetic field.
  5. Electrostatics, the study of electric charges at rest.
Answer Key

A. Fill in the blanks –

  1. Electron
  2. Static
  3. Magnetic field
  4. Electro magnet
  5. Electro statistics

 

B. State True or False –

  1. False
  2. False
  3. True
  4. False
  5. True

Learn more about Electricity and Magnetism and other important topics with 7th Grade Science Tutoring at eTutorWorld. Our expert science tutors break down the topics through interactive one-to-one sessions. We also offer the advantage of customized lesson plans, flexible schedules and convenience of learning from home.

Schedule a Free session to clear worksheet doubts

No credit card required, no obligation to purchase.
Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!

Pricing for Online Tutoring

Tutoring PackageValidityGrade (1-12), College
5 sessions1 Month$139
1 session1 Month$28
10 sessions3 months$269
15 sessions3 months$399
20 sessions4 months$499
50 sessions6 months$1189
100 sessions12 months$2249
10% OFF
Save Big on All Summer Courses and Tutoring Packs
Code : Summer10
10% OFF
Save Big on All Summer Courses and Tutoring Packs
Code : Summer10