Non-Contact Forces Unit Test
Science 6 B (MI) / Non-Contact Forces I need help theres 13 questions.
Which statement explains how the charges on objects determine the electric force between them?(1 point)
Objects with the same charge attract each other, and objects with opposite charges repel each other.
Objects with the same charge attract each other, and objects with opposite charges repel each other.
Objects with positive charges repel each other, and objects with negative charges attract each other.
Objects with positive charges repel each other, and objects with negative charges attract each other.
Objects with the same charge repel each other, and objects with opposite charges attract each other.
Objects with the same charge repel each other, and objects with opposite charges attract each other.
Objects with positive charges attract each other, and objects with negative charges repel each other.
Which conclusion about the interactions is correct?
(1 point)
The objects in interaction A are smaller than in interaction B.
The objects in interaction A are smaller than in interaction B.
Repulsive forces are stronger than attractive forces.
Repulsive forces are stronger than attractive forces.
Positive charges are stronger than negative charges.
Positive charges are stronger than negative charges.
The objects in interaction A are farther apart than in interaction B.
Why is glass a good insulator?(1 point)
The atoms in glass hold on tightly to their negatively charged particles.
The atoms in glass hold on tightly to their negatively charged particles.
The atoms in glass do not hold on tightly to their positively charged particles.
The atoms in glass do not hold on tightly to their positively charged particles.
The atoms in glass do not hold on tightly to their negatively charged particles.
The atoms in glass do not hold on tightly to their negatively charged particles.
The atoms in glass hold on tightly to their positively charged particles.
The atoms in glass hold on tightly to their positively charged particles.
Which statement describes a difference between insulators and conductors?(1 point)
Insulators can transmit electric current, while conductors cannot.
Insulators can transmit electric current, while conductors cannot.
Insulators have high resistance, while conductors have low resistance.
Insulators have high resistance, while conductors have low resistance.
Insulators are made of metallic materials, while conductors are not.
Insulators are made of metallic materials, while conductors are not.
Insulators have high conductivity, while conductors have low conductivity.
Insulators have high conductivity, while conductors have low conductivity.
Circuit A has a voltage of 10 V, and circuit B has a voltage of 15 V. Which statement about the circuits is correct?(1 point)
If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the current in circuit A is greater than the current in circuit B, then the resistance in circuit A is less than the resistance in circuit B.
If the current in circuit A is greater than the current in circuit B, then the resistance in circuit A is less than the resistance in circuit B.
If the resistance in circuit A is greater than the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the resistance in circuit A is greater than the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the current in circuit A equals the current in circuit B, then the resistance in circuit A equals the resistance in circuit B.
How does adding a resistor to an electric circuit affect the current?(1 point)
The resistor decreases the current by decreasing the amount of electric charge.
The resistor decreases the current by decreasing the amount of electric charge.
The resistor decreases the current by transforming electrical energy into different types of energy.
The resistor decreases the current by transforming electrical energy into different types of energy.
The resistor increases the current by increasing the amount of electric charge.
The resistor increases the current by increasing the amount of electric charge.
The resistor increases the current by transforming light energy or heat into electrical energy.
The resistor increases the current by transforming light energy or heat into electrical energy.
Which energy transformation happens when a toaster is plugged in to an outlet in the wall and used to make toast?(1 point)
Electrical energy from the outlet is converted completely to chemical energy in the toast.
Electrical energy from the outlet is converted completely to chemical energy in the toast.
Electrical energy from the outlet is converted to heat and light energy for the toaster.
Electrical energy from the outlet is converted to heat and light energy for the toaster.
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Electrical energy from the outlet is converted completely to heat energy for the toaster.
Electrical energy from the outlet is converted completely to heat energy for the toaster.
Solar cells are used to power a person’s house. Which statement about the process is correct?(1 point)
Energy from the sun might be greater than the energy needs of the house because some energy is destroyed in the process.
Energy from the sun might be greater than the energy needs of the house because some energy is destroyed in the process.
Energy from the sun might be greater than the energy needs of the house, so some energy will be stored and/or wasted.
Energy from the sun might be greater than the energy needs of the house, so some energy will be stored and/or wasted.
Energy from the sun will equal the energy needs of the house because energy is not created or destroyed.
Energy from the sun will equal the energy needs of the house because energy is not created or destroyed.
Energy from the sun might be less than the energy needs of the house, but solar cells make up for this difference.
Energy from the sun might be less than the energy needs of the house, but solar cells make up for this difference.
A particular circuit is made up of a battery, a switch, a buzzer, and wires connecting the components. All of the components are in working order, but the buzzer does not make noise. Which statement explains this observation?(1 point)
The load cannot convert electrical energy.
The load cannot convert electrical energy.
The conductors are not attached.
The conductors are not attached.
The switch is open.
The switch is open.
The circuit lacks a power source.
Which purpose does a light bulb serve in a circuit?(1 point)
wire
wire
cell
cell
load
load
switch
switch
Use the table to answer the question.
Electromagnet Current Intensity Number of Turns
P medium 20
Q low 20
R low 15
Which list shows the electromagnets in order from strongest magnetic force to weakest magnetic force?
(1 point)
R, P, Q
R, P, Q
Q, R, P
Q, R, P
R, Q, P
R, Q, P
P, Q, R
How is an electromagnetic field produced?(1 point)
when a conductor interacts with a magnet
when a conductor interacts with a magnet
when a current runs through a conductor
when a current runs through a conductor
when an object has an electrical charge
when an object has an electrical charge
when particles are arranged around a conductor
when particles are arranged around a conductor
An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional magnet and its poles interact with the electromagnet, causing an electromagnetic motor to turn. What are some ways you could make an electromagnetic motor stronger, and how could you apply these principles to everyday life? In three to five sentences, explain this phenomenon in real life and hypothesize about how you could strengthen it.(4 points)
Short Answer Rubric (4 points)
Points Awarded Criteria
4
The answer is very clear.
The answer is fully supported by details.
There may be a few errors in grammar, usage, or mechanics. Errors do not interfere with meaning.
3
The answer is mostly clear.
The answer is supported by mostly relevant details.
There are a few errors in grammar, usage, or mechanics. Errors do not interfere with meaning.
2
The answer is somewhat clear.
Details are weak or not related.
There are some errors in grammar, usage, and mechanics. Errors interfere with meaning.
1
The answer is not clear.
There are few or no supporting details.
There are many errors in grammar, usage, and mechanics. Errors interfere with meaning.
0 The question is not answered.
Which purpose does a light bulb serve in a circuit?(1 point)
Responses
cell
cell
load
load
wire
wire
switch
load
Use the table to answer the question.
Electromagnet Current Intensity Number of Turns
P medium 20
Q low 20
R low 15
Which list shows the electromagnets in order from strongest magnetic force to weakest magnetic force?
(1 point)
Responses
Q, R, P
Q, R, P
R, P, Q
R, P, Q
R, Q, P
R, Q, P
P, Q, R
R, Q, P
How is an electromagnetic field produced?(1 point)
Responses
when a current runs through a conductor
when a current runs through a conductor
when a conductor interacts with a magnet
when a conductor interacts with a magnet
when an object has an electrical charge
when an object has an electrical charge
when particles are arranged around a conductor
when a current runs through a conductor
An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional magnet and its poles interact with the electromagnet, causing an electromagnetic motor to turn. What are some ways you could make an electromagnetic motor stronger, and how could you apply these principles to everyday life? In three to five sentences, explain this phenomenon in real life and hypothesize about how you could strengthen it.(4 points)
There are several ways to make an electromagnetic motor stronger. One way is to increase the number of turns in the coil, which would increase the strength of the magnetic field. Another way is to increase the current running through the coil, which would also increase the strength of the magnetic field. Additionally, using a stronger magnet in conjunction with the electromagnet would increase the strength of the overall magnetic force. These principles could be applied to everyday life in various ways, such as in the manufacturing of stronger motors for appliances, vehicles, and machinery. By optimizing the design of these motors, they could become more efficient and consume less energy, leading to cost savings and reduced environmental impact.
To determine the correct answer for each question, let's go through the options and explanations provided.
Question 1: Which statement explains how the charges on objects determine the electric force between them?
The correct answer is: Objects with the same charge repel each other, and objects with opposite charges attract each other. This option accurately describes how charges interact with each other based on their polarity.
Question 2: Which conclusion about the interactions is correct?
The correct answer is: The objects in interaction A are farther apart than in interaction B. This conclusion correctly explains that the objects in interaction A are spaced at a greater distance compared to interaction B.
Question 3: Why is glass a good insulator?
The correct answer is: The atoms in glass do not hold on tightly to their negatively charged particles. This explains that glass does not tightly hold onto its negatively charged particles, which makes it a good insulator.
Question 4: Which statement describes a difference between insulators and conductors?
The correct answer is: Insulators have high resistance, while conductors have low resistance. This statement accurately describes the difference between insulators and conductors - insulators inhibit the flow of electricity more than conductors.
Question 5: Circuit A has a voltage of 10 V, and circuit B has a voltage of 15 V. Which statement about the circuits is correct?
The correct answer is: If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B. This statement explains the relationship between voltage, resistance, and current in a circuit.
Question 6: How does adding a resistor to an electric circuit affect the current?
The correct answer is: The resistor decreases the current by decreasing the amount of electric charge. Adding a resistor in a circuit decreases the current flow by impeding the movement of electric charge.
Question 7: Which energy transformation happens when a toaster is plugged into an outlet in the wall and used to make toast?
The correct answer is: Electrical energy from the outlet is converted to heat and light energy for the toaster. When a toaster is powered, electrical energy is transformed into heat and light energy to toast the bread.
Question 8: Solar cells are used to power a person's house. Which statement about the process is correct?
The correct answer is: Energy from the sun might be greater than the energy needs of the house, so some energy will be stored and/or wasted. Solar cells convert sunlight into electrical energy, and the amount of energy produced may exceed the immediate needs of the house.
Question 9: A particular circuit is made up of a battery, a switch, a buzzer, and wires connecting the components. All of the components are in working order, but the buzzer does not make noise. Which statement explains this observation?
The correct answer is: The switch is open. If the switch is open, it means it is not allowing the flow of current through the circuit, resulting in the buzzer not making any noise.
Question 10: Which purpose does a light bulb serve in a circuit?
The correct answer is: load. A light bulb acts as a load in a circuit, converting electrical energy into light energy.
Question 11: Use the table to answer the question. Electromagnet Current Intensity Number of Turns P medium 20 Q low 20 R low 15. Which list shows the electromagnets in order from strongest magnetic force to weakest magnetic force?
The correct answer is: R, P, Q. The electromagnets are listed in order from strongest to weakest magnetic force.
Question 12: How is an electromagnetic field produced?
The correct answer is: when a current runs through a conductor. An electromagnetic field is generated when an electric current flows through a conductor.
Question 13: An electromagnet is a coil of wire with a current running through it. This creates an electromagnetic field. An additional magnet and its poles interact with the electromagnet, causing an electromagnetic motor to turn. What are some ways you could make an electromagnetic motor stronger, and how could you apply these principles to everyday life?
For this open-ended question, you need to provide a response with three to five sentences, explaining how to make an electromagnetic motor stronger and how this principle can be applied to everyday life. Remember to support your answer with relevant details and examples.
I hope this guidance helps you in answering these questions effectively.