A student wants to design and construct a device that can communicate across a room using sound. The student uses five steps to construct the device.
Step 1: Punch a small hole in the bottom of 2 plastic cups.
Step 2: ?
Step 3: ?
Step 4: ?
Step 5: Speak into the cup.
Which steps would BEST complete the procedure for designing a device that can communicate across a room using sound?
A.
Step 2: Thread the ends of a 2-ft chain of paper clips through the hole in the bottom of each cup.
Step 3: Tie the ends of the paper-clip chain to a piece of string to keep them from slipping through the holes in the cups.
Step 4: With a partner standing next to you, pull the chain that connects the two cups so that it is tight.
B.
Step 2: Thread the ends of a 20-ft piece of string through the hole in the bottom of each cup.
Step 3: Tie the ends of the string to a paper clip to keep them from slipping through the holes in the cups.
Step 4: With a partner standing across the room, pull the string that connects the two cups so that it is tight.
C.
Step 2: Thread the ends of a 20-ft piece of string through the hole in the bottom of each cup.
Step 3: Tie the ends of the string to a paper clip to keep them from slipping through the holes in the cups.
Step 4: With a partner standing across the room, leave slack in the string that connects the two cups.
D.
Step 2: Thread one end of a 2-ft piece of string through the hole in the bottom of one cup.
Step 3: Repeat step 2 with the other cup.
Step 4: Pull the string tight and have your partner stand across the room.
B.
Step 2: Thread the ends of a 20-ft piece of string through the hole in the bottom of each cup.
Step 3: Tie the ends of the string to a paper clip to keep them from slipping through the holes in the cups.
Step 4: With a partner standing across the room, pull the string that connects the two cups so that it is tight.