Question

name kayla white! per 7 31

1. (p. 42) how did samuel f. b. morse send a message using electromagnets?

1. (p. 43) electromagnets are even used in phones and all types of speakers! in order to hear sounds over a phone, you need a speaker to convert

into

1. (p. 43) examine the diagram of a speaker on page 43. quickly sketch what you see in the diagram in the space below. add the three labels as well.

speaker diagram:

1. (p. 44) how are electromagnets used in model railroads?

1. (p. 45) besides adding more coils of wire, whats another way to make an electromagnet stronger?

1. (p. 46) some of the strongest electromagnets, called are cooled to reach maximum strength. (mri) machines in hospitals use such magnets.

Explanation:

These questions are about electromagnets and their applications, which falls under the subfield of Physics (a subfield of Natural Science). For question 8, speakers in phones convert electrical energy (in the form of electrical signals) into sound energy (the sound we hear).

Answer:

1. electrical energy (or electrical signals) ; sound energy (or sound waves)