Question

Describe an experiment that tests whether all metals are magnetic and identify the independent and dependent variable in your experiment.

Answer 1

Answer and Explanation:

NOTE: Magnetism means the magnetic property of a material that causes it to create a magnetic field, hence getting it attracted to a magnet.

EXPERIMENTAL PROCEDURE

1. Use a tape to attach a permanent magnet to the end of a ruler so that the magnet is facing away from the ruler. Don't cover the magnetic surface with the tape. ( Leave the magnet in its decorative casing.)

2. Place your metal objects in a row, and make predictions of which one of them will be attracted to the magnet and which will not.

3. Hold the magnet over each metals, and record which metals are attracted to the magnet. Go back over the

objects that were not affected by the magnet at least one more time to be sure you didn't miss any.

In this experiment, the independent variable is the magnetism of the magnet used. This is the independent variable because it remained unchanged and unaffected by the metals' magnetic properties all through the experiment.

While the dependent variable is the magnetism of the metals used. This is so because the magnetism of these metals varied and also because it is what is been measured in the experiment. Some were attracted to the magnet from very close range while others were attracted even at some centimeters away from the magnet which indicates that those metals have strong metallic properties.

Answer 2

Answer:

The aim of this experiment is to determine the magnetism and magnetic properties of objects.

Magnetism can be defined as the phenomenon that is a result of the movement of the free electron that produces an electric charge which in turn results in attractive and repulsive force between objects.

Explanation:

• Aim: Determining which objects are magnetic.
• Material Required:

1. Different kinds of objects such as eraser, wood cuttings, plastic balls, pins, glass, wires, coins, paper clip, screw, nut, and bolt.
2. A magnet.

• Procedure:

1. Scatter the various objects as mentioned above on the floor.
2. Once scattered, take the piece of magnet and slowly hold it on top of each object.
3. Observe carefully which of these objects slightly moves in the direction of magnet or simply which of these objects are attracted to the magnet.

• Inference:

1. The objects that move in the direction of the magnets are attracted towards magnets, they're also called ferromagnetic. These include metals like Iron, Cobalt, Nickle, and their alloys.
2. The objects that show no movement in the direction of the magnet are not attracted to a magnet.

• Independent variable: Such variables whose values don't depend on others. Here, the independent variable is the magnetism of the magnet.
• Dependent variable:  Such variables whose value values depend on others or other factors. Here, the magnetic properties of the objects used in the experiment are dependent variables because the degree of attraction is different for different objects. Objects made of wood, glass, and plastic will have no magnetic properties while the alloys of Iron, Nickle, and Cobalt will have slight magnetic properties and objects made purely of the these metals will show strong magnetic properties.

For more information:

https://brainly.com/question/12740727