Some forms of electromagnetic radiation with short wavelengths are a Visible

Some forms of electromagnetic radiation with short

This preview shows page 11 - 13 out of 19 pages.

45.Some forms of electromagnetic radiation with short wavelengths are: a.Visible light and IR radiationb.Visible light and x-raysc.x-rays and IRd.gamma rays and UV radiatione.Visible light and gamma raysANS: DPTS:1DIF:ModerateTOP:2-3 WHAT IS ENERGY AND WHAT HAPPENS WHEN IT UNDERGOES CHANGE?BLOOM’S TAXONOMY: KNOWLEDGE 46.Which of the following are widely used technologies that are responsible for wasting enormous amounts of energy? TRUE/FALSE 1.Since scientific theories are tentative explanations, they should not be taken seriously. 2.Scientists analyze data before they take any other steps to investigate natural processes, since that is the only logical place to start.ANS: FPTS:1DIF:ModerateBLOOM’S TAXONOMY: KNOWLEDGE3.The two chemical forms of matter are elements and compounds.ANS: TPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE4.Chemical elements cannot be broken down into simpler substances.ANS: TPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE5.The steps in the scientific investigative process are always followed in the same sequence by every scientist, without fail.ANS: FPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE 31
Background image
6.When matter undergoes physical changes, the chemical composition also changes.ANS: FPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE7.Hydrocarbons are organic compounds.ANS: TPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE8.The very first step in the scientific process is to find out what is known about the problem.ANS: FPTS:1DIF:ModerateBLOOM’S TAXONOMY: KNOWLEDGE9.When electrical energy lights an incandescent light bulb, 50 percent of the energy produces light.ANS: FPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE10.When energy changes from one form to another, it always goes from a more useful to a less useful form.ANS: TPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE11.The idea that all elements are made up of molecules is called the atomic theory.ANS: FPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE12.A chemical element cannot be broken down into simpler substances by chemical means.ANS: TPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE13.Atoms as a whole have no net electrical charge.ANS: TPTS:1DIF:EasyBLOOM’S TAXONOMY: KNOWLEDGE14.The atomic number of an atom designates the number of protons and neutrons found in its nucleus.
Background image
Image of page 13

You've reached the end of your free preview.

Want to read all 19 pages?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes