An electromagnet is created by looping a wire around an iron nail and connecting the ends of the wire to a battery. Which of the following will increase the strength of the electromagnet? Select all correct answers.
1 point
1
Question 2
2.
If the North pole of a magnet is brought near the North pole of another magnet, which of the following will happen?
1 point
1
Question 3
3.
Two magnets found with no label marking the North and South Poles. When the ends of the two magnets are brought near each other, they are attracted. What must be true about the ends of these two magnets?
1 point
1
Question 4
4.
The image is an example of which of the following?
1 point
1
Question 5
5.
The image is an example of which of the following?
1 point
1
Question 6
6.
The image is an example of which of the following?
1 point
1
Question 7
7.
If the distance between two magnets is increased (they are moved farther apart) what happens to strength of the magnetic force?
1 point
1
Question 8
8.
Which of the following determines if a metal is magnetic?
1 point
1
Question 9
9.
Three magnets, A, B, and C are the exact same size, but made of different materials. A scientist wants to determine which magnet is the strongest by seeing which magnet can pick up the most paperclips. She collects the data shown below. Based on this data, which magnet is the strongest?
1 point
1
Question 10
10.
Which of the following will be attracted to a magnet?
1 point
1
Question 11
11.
What is the word used to describe a material that can be a permanent magnet?
1 point
1
Question 12
12.
What will happen if two oppositely charged particles are brought near each other?
1 point
1
Question 13
13.
Match each subatomic particle to its charge
Draggable item
arrow_right_alt
Corresponding Item
electron
arrow_right_alt
positive charge
proton
arrow_right_alt
zero charge
neutron
arrow_right_alt
negative charge
1 point
1
Question 14
14.
Which of the following are true about atoms? Select all correct answers.
1 point
1
Question 15
15.
If an atom gains an electron what will be its charge?
1 point
1
Question 16
16.
If an atom loses an electron what will be its charge?
1 point
1
Question 17
17.
When a balloon is rubbed on your hair, electrons move from the hair to the balloon. Which of the following are true? Select all correct answers.
1 point
1
Question 18
18.
When a balloon is rubbed on your hair, electrons move from the hair to the balloon. You notice your hair stands straight up. Which of the following best explains this phenomenon?
1 point
1
Question 19
19.
Match the following terms with their definitions
Draggable item
arrow_right_alt
Corresponding Item
atom
arrow_right_alt
Electrical charge that is not moving
electric current
arrow_right_alt
Electrical charge that is moving
static electricity
arrow_right_alt
no charge
attract
arrow_right_alt
smallest piece of a chemical element
repel
arrow_right_alt
bring together
neutral
arrow_right_alt
push away
1 point
1
Question 20
20.
What are the units used to measure electric current?
1 point
1
Question 21
21.
This is a model of the an atom of Helium. Which particles are represented by the yellow circles on the outer ring?
1 point
1
Question 22
22.
A balloon that is hanging on a rope from the ceiling is rubbed on hair and it gains a negative charge. A second balloon is also rubbed on hair giving it negative charge. What will happen if the second balloon is brought near the hanging balloon?
1 point
1
Question 23
23.
A scientist is studying the question: How does electric current affect the strength of a magnetic field from an electromagnet? She uses different batteries that have different voltages which causes the current in the wire to change. She collects the data and creates the graph below. Which of the following is a reasonable claim from this data?
