Welcome to The Sound of Science on WNIJ. When you think of the word “noise”, what comes to mind? People chatting around you? The rumble of the road? The buzz from a TV? Many people equate noise with sound , but scientists and researchers have a different vernacular, and they use noise differently. Like with sound, noise to a scientist refers to something unwanted in the background, something that distracts from the real subject. You can think of it like static on the radio. However, this noise

J: I'm Jeremy Benson from NIU STEM Outreach and I'm in the studio with Kate Powers. This is the Sound of Science on WNIJ.

J: I'm Jeremy Benson from NIU STEM Outreach and I'm in the studio with Kate Powers. This is the Sound of Science on WNIJ. K: Hi Jeremy, I hear you have a delicious question for me today. J: That's right! This question is about the chemistry of baking. Lynn wants to know why many recipes call for both baking soda and baking powder. And what's the difference between the two? K: Lynn's right. Many cookie or cake recipes call for both types of chemical raising agents. J: Chemical raising agent? Are

K: I’m Kate Powers from NIU STEM Outreach and I’m in the studio with Jeremy Benson. This is the Sound of Science on WNIJ.

K: I’m Kate Powers from NIU STEM Outreach and I’m in the studio with Jeremy Benson. This is the Sound of Science on WNIJ. J: Kate, we have a question today from Sara. She wants to know why diamonds are so hard? K: Sara’s right, diamonds are one of the hardest substances on earth. They are very important for industrial tools and scientific instruments. J: Wait, that must be very expensive to make a tool out of diamonds! K: Well, it is but not as expensive as you think. Diamond tools use the very

Sam: I’m Sam Watt from NIU STEM Outreach and this is the Sound of Science on WNIJ. I have a question from Madison today and Jeremy Benson is going to help me answer. Jeremy, Madison wants to understand more about rainbows. Why do we see them and why do they appear in the sky just after a rainstorm?

K: I’m Kate Powers from NIU STEM Outreach here in the studio with Sam Watt and this is the Sound of Science on WNIJ.

Sam: Welcome to the Sound of Science on WNIJ. I’m Sam from NIU STEM Outreach.

K: I’m Kate Powers from NIU STEM Outreach here in the studio with Jeremy Benson and this is the Sound of Science on WNIJ.

K: I’m Kate Powers from NIU STEM Outreach with Jeremy Benson and this is the Sound of Science on WNIJ.