Magnetism 1
Magnetism 2
Randomness 1
Magnets and Electricity
Randomness 2
100
Students were asked to construct an electromagnet that could pick up metal objects. They were given a D-cell battery, 12 inches of copper wire and a large iron nail. Draw a picture that shows the set up of an electromagnet that will attract metal objects.
What is D cell batter with with one end of the wire connected wrapped around the iron nail then back to the battery.
100
Which of the following will be attracted to an electromagnet? a. glass marble b. a piece of wood c. a steel paper clip
What is C a steel paper clip
100
What will happen if you hold a balloon with a small static charge close to your head? a. the balloon will pop. b. your hair will stand up. c. You will get a shock.
What is B your hair will stand up
100
Which as the most force, or pull, on a paper clip? a. one magnet b. two magnets c. four paper clips
What is B
100
Select the magnetic materials: a. plastic and iron b. iron and steel c. paper and cloth d. wood and silver
What is B iron and steel
200
Jensen did an experiment to see if he could change the strength of an electromagnet. He used 2 multiple 2V batteries, copper wire, and iron nails with 10 turns of wire around each nail. -one 2V battery with 10 turns of wire will pick up 6 paperclips -two 2V battery with 10 turns of wire will pick up 12 paperclips -three 2v battery with 10 turns of wire will pick up 18 paperclips How many paper clips will be picked up by an electromagnet made up of 10 turns of wire and 5 batteries? a. 18 b. 24 c. 30 d.36
What is C 30
200
Which pair(s) of magnets will be attracted to one another? a. SN NS b. SN SN c. NS SN
What is B
200
a scientist observes a spider weaving a web. The scientist that sees a small, round, white object in the web. she (the scientist) believes that the white object is an egg sac. Which of the following is NOT a good way to test her hypothesis? a. she can watch the white object each day to see if baby spiders hatch. b. she can read about spiders and find out what their eggs typically look like. c. she can take pictures of the white object and compare it to pictures of other spider eggs. d. she can research the eggs of different animals and compare those to the white object in the web.
What is d
200
Which of the following problems can be solved with a magnet? a. picking up a plastic ring b. determining if an unknown metal contains iron c. creating a spark to start a fire d. completely separating a mixture of salt and sand
What is b
200
Metal objects that acts as a magnet when an electric current moves through it. a. electromagnet b. friction c. conductor d. insulator
What is A electromagnet
300
Joseph set up an experiment to see how to change the strength of an electromagnet. He assembled a 9V battery, copper wire, and an iron nail. Then he wrapped the wire around the nail various numbers of times to see if that would have any effect on the number of paper clips the electromagnet would pick up. -10 turns of wire will pick up 3 paper clips -20 turns of wire will pick up 8 paper clips -30 turns of wire will pick up 13 paper clips -50 turns of wire will pick up ??? paper clips based on the three trials, how many paper clips would you predict that the 4th electromagnet would pick up if it had 50 turns of wire around it? a. 13 b. 18 c. 23 d. 28
What is C. 23 paper clips
300
Which of the following is a true statement about magnets? a. all metals are attracted to magnets b. magnets can be used to sort any type of object c. magnets have a visible area of force called a magnet field. d. all magnets have a north and south pole
What is D
300
Draw a picture of a series circuit
What is christmas lights!
300
A students has a kitchen cabinet door that won't stay closed. Draw magnets on the cabinet to design a solution that helps the cabinet door stay closed.
What is place a magnet on the inside of the door frame and a magnet on the inside of the door that will connect when the door is pushed closed.
300
The north and south poles of two magnets ________ a. repel each other b. create friction c. attract each other d. create new magnets
What is C
400
Elizabeth wants to know whether two pieces of metal are magnetic. She takes one end of each piece and she feels them immediately come together. Then, she turns one piece around and tests the other end. No matter how hard she tries, this end pushes away from the other piece. Why do the metal pieces come together on the first try but not the sec on try? a. the test shows that neither piece of metal is a magnet b. the test shows that one of the metal pieces is not a magnet c. the test shows that south poles repel and north poles attract each other. d. The test shows that the two pieces of metal are magnetic with two sides attracting and opposite sides repelling.
What is D The test shows that two pieces of metal are magnetic with two sides attracting and opposite sides repelling.
400
At which distance would a magnet have the weakest pull, or force, on another magnet? a. touching the magnet b. 6 inches away from the magnet c. across the room from the magnet
What is C
400
Substances which allow current to pass through are called what? a. conductors b. inductors c. insulators d. none of the above
What is A conductor
400
What will happen if you hold a balloon with a small static charge close to your head? a. the balloon will pop. b. your hair will stand up. c. You will get a shock.
What is b
400
What material will make a good insulator of electricity? a. copper wire b. aluminum foil c. gold wire d. plastic
What is A
500
A group of students hypothesized that the closer the two magnets are to each other, the stronger the attraction or repulsion. Which of the following experiments tests this hypothesis? a. position each magnet at different distances from a pile of iron pieces. Observe how many iron pieces are attracted. b. Put two magnets 5 inches apart and record observations. Repeat at distances of 4, 3,2, and 1 inch. c. Put a magnet under a piece of paper. Put iron shavings on the top of the paper and observe what happens at the two end of the magnet. d. Push two magnets with like poles together (N to N or S to S) and observe how hard it is to keep them in place. Next, place opposite poles (N to S) together and observe how hard it is to pull them apart.
What is B
500
Magnets either attract or repel each other depending on their positions. -Draw two horseshoe magnets that are attracted to one another -Draw two horseshoe magenta that repel one another.
What is North seeks south, south seeks north
500
Electric current can flow only through_________ a. closed circuits b. open circuits
What is B closed circuits
500
Ancient Greeks noticed that when amber was rubbed with fur, the amber would attract small particles. Greeks called things that acted like amber "Elektrons." Today, we use the word "electrons" to name the negatively charged parts of an atom. When the Greeks rubbed amber with fur, it caused the electrons to move and form an electric charge, also called a current. What force caused this electric current with amber? a. friction b. heat c. light d. sound
What is A
500
What is static electricity? a. electricity produced by friction b. the energy of motion c. the path along which electrons flow d. all of above
What is D all of above
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