Answer the following question given this paragraph: A Geiger counter provides a sensitive means of detecting radioactivity. A tube is filled with an inert gas, which will conduct electricity when radiation enters it. When a charged particle comes into the tube, it changes the electrical potential between the anode and the cathode. This change in potential in the tube produces a change in voltage in the electrical circuit and registers as a count. Geiger counters are fairly inexpensive and reliable, so they are useful in a wide range of applications. More complicated types of counters are also available, but are generally used in sophisticated experiments. Q: What counter provides a sensitive means of detecting radioactivity? Choices: - calorie - bouncy - gravity - geiger A:
geiger
Answer the following question given this paragraph: Geologists group rocks based on how they form. There are three major rock types. Each will be described in more detail in the coming concepts. Q: Geologists group rocks based on how they what? Choices: - dissove - look - move - form A:
form
Q: Answer the following question given this paragraph: Fructose, a sugar found in fruit, contains only carbon, oxygen, and hydrogen. It is used in ice cream to prevent a sandy texture. Complete combustion of 32.4 mg of fructose in oxygen produced 47.6 mg of CO2 and 19.4 mg of H2O. What is the empirical formula of fructose? 11. Coniine, the primary toxin in hemlock, contains only carbon, nitrogen, and hydrogen. When ingested, it causes paralysis and eventual death. Complete combustion of 28.7 mg of coniine produced 79.4 mg of CO2 and 34.4 mg of H2O. What is the empirical formula of the coniine? 12. Copper and tin alloys (bronzes) with a high arsenic content were presumably used by Bronze Age metallurgists because bronze produced from arsenic-rich ores had superior casting and working properties. The compositions of some representative bronzes of this type are as follows:. Q: How can you prevent your ice cream from getting a sandy texture? Choices: - by using lowfat milk - by adding oil - by adding salt - by using fructose A:
A: by using fructose
Question: Answer the following question given this paragraph: The Sun is Earth's main source of energy. The Sun gives us both light and heat. The Sun changes hydrogen into helium through nuclear fusion. This releases huge amounts of energy. The energy travels to the Earth mostly as visible light. The energy is carried through the empty space by radiation . We can use sunlight as an energy resource, called solar energy ( Figure above ). Q: What is earth's main source of energy? Choices: - the atmosphere - the moon - the core - the sun A:
Answer: the sun
*Question*
Answer the following question given this paragraph: Figure 6.18 The diagram shows angular momentum for a circular motion. Q: The motion of stars in galaxies imply that there is about 10 times as much what as in the luminous objects we can see? Choices: - density - heat - light - mass A:
**Answer**
mass
Q: Answer the following question given this paragraph: Stars are born in clouds of gas and dust called nebulas. Our Sun and solar system formed out of a nebula. A nebula is shown in Figure below . In Figure above , the fuzzy area beneath the central three stars contains the Orion nebula. Q: What celestial bodies are born in clouds of gas and dust called nebulas? Choices: - planets - comets - galaxies - stars A:
A: stars