Question 1
Sadie has to design a device that uses sound to communicate over a distance. She comes up with what she thinks is a great idea.
How could she test her design?
- Sadie could build the device and then use it to see if it works.
- Sadie shouldn't build something new or test it because everything has already been invented.
- Sadie could ask a friend what they think and then design something new.
Explanation: The best way for Sadie to test her design is to build it and use it. If she makes it and finds some things that need to be fixed or changed, she can work on her design. If she never actually builds it, she won't know if it works.