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WorksheetsNon-Contact Forces
Total questions: 14
Worksheet time: 8mins
Name
Class
Date
1.
Which of the following forces cannot act from a distance?
a)
magnetism
b)
electricity
c)
kinetic friction
d)
gravity
2.
When a satellite is sent into space, what causes it to orbit a planetary body?
a)
The satellite enters the planet's gravitational field and falls into orbit around it
b)
The force of thrust sends it into orbit around the planet
c)
The planet's magnetic pull attracts the object into the field
d)
Satellites do not orbit a planet they only pass near planets on their journey through space
3.
Each non-contact force has an area of influence surrounding it. What is this area called?
a)
gravitational attraction
b)
influence center
c)
field
d)
attraction
4.
If iron filings are sprinkled around the magnet, what will happen?
a)
The filings will move away from the magnet's field.
b)
The filings within the magnetic field will show an attraction between the north and south poles.
c)
The filings will not create a pattern.
d)
The filings within the magnetic field will show how the 2 ends of the magnet are repulsive.
5.
The diagram below shows that ______________________.
a)
As distance increases, the electric force increases.
b)
As distance decreases, the objects become less attractive.
c)
Electric forces are only slightly affected by distance.
d)
As distance increases, the electric force decreases.
6.
Which answer best describes this image?
a)
The positive charge is repelling the negative charge.
b)
The blue charged object will repel the negatively red charged object.
c)
The positively charged red object will be attracted to the negatively charged blue object.
7.
Which of the following statements is true?
a)
When an object gains electrons, its positive charge increases.
b)
When an object gains electrons, its negative charge increases.
c)
When objects gain protons, they become positively charged.
d)
When objects transfer neutrons, the charge increases.
8.
If each object has the same mass, which pair has the strongest gravitational attraction?
a)
The first, because it appears to weigh the most.
b)
The first, because the arrows are thickest.
c)
The second, because it has an even balance of weight and distance.
d)
The first, because the objects are closest together.
9.
What does the law of universal gravitation describe?
a)
Objects are attracted to one another based on the distance between them and their masses.
b)
Objects repel each other if their mass is too small or their distance is too great.
c)
All objects experience gravity based on the amount of magnetism they encompass.
d)
An object's gravitational pull is determined solely by the amount of mass it contains.
10.
Which of the following names the interaction of electric fields and magnetic currents?
a)
electromagnetism
b)
electric field lines
c)
magnetic and electric stations
d)
magnetism and gravity
11.
What is one advantage of the electromagnet pictured below
a)
The magnet can be turned off when the electric current is switched off
b)
The magnet is permanent so it is more reliable
c)
The magnet is turned off when the domains align
d)
It would be more of an advantage if the magnet was permanent
12.
What causes an object to become magnetic?
a)
scientists do not know why an object is magnetic but they can determine which materials are likely to become magnetic
b)
An object is magnetic based on its number of north and south poles
c)
The atoms within a magnet align in the same direction creating a magnetic domain
d)
it is simply based on the element of the object
13.
The image shows a generator. How does it work?
a)
The generator is plugged in to create light in a power outage.
b)
The electricity attracts magnetism to produce light.
c)
The generator uses electricity to create mechanical energy.
d)
The generator converts mechanical energy into electricity.
14.
The picture shows a simple motor created by a student. The motor works because________.
a)
The magnet on the bottom produces an electric current for the wires.
b)
The electric current flows through the conductors on the left and right sides, creating a magnetic field around the object on top.
c)
The object is able to convert mechanical energy into electrical energy.
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