The ________ instrument contains a liquid of low density, such as alcohol, with an embedded dumb-bell index
A) bimetal strip
B) minimum thermometer
C) maximum thermometer
D) thermistor
B
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The landform feature you have profiled is a drumlin. Drumlins are formed by glacial deposits and are streamlined in the direction of the glacier’s movement. They have a blunt end upstream, a tapered end downstream, and a rounded summit. Using your protractor, what direction was the glacier flowing?
Use the profile constructed in Figure 23.5 to answer the question and completion items.
What will be an ideal response?
This seismic hazards usually deals with smaller earthquakes.
- After shocks
- Ground shaking
- Landslides
- Liquefaction
- Tsunami
Just after an alpha particle leaves the nucleus, would you expect it to speed up? Why?
A) No. Once the alpha particle leaves the nucleus it is slowed by the repulsion of the next closest atom's nucleus. B) No. As the alpha particle leaves the nucleus it is slowed by the constant attraction of the electrons surrounding the nucleus. C) Yes. Once the alpha particle leaves the nucleus there are no more forces acting on it and it therefore accelerates. D) Yes. Once the alpha particle leaves the nucleus it accelerates because of mutual electric repulsion with the nucleus from which it escaped.
When radioactive isotopes decay they emit radiation that is harmful to humans. Which of the following forms of radiation have the highest energy and ability to penetrate solid materials?
A. gamma rays B. ultraviolet waves C. beta particles (electrons) D. microwaves E. alpha particles (helium nuclei)