| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
Which of the following is not a method of heat transfer?
reflection |
|
conduction |
|
convection |
|
radiation |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.
Minerals, vitamins, and fiber are:
proteins |
|
carbohydrates |
|
macronutrients |
|
micronutrients |
Minterals, vitamins, and fiber are micronutrients while proteins, carbohydrates, and fats are macronutrients.
The Earth's rocks fall into three categories based on how they're formed. Which of the following is formed from the hardening of molten rock?
marble |
|
sedimentary |
|
metamorphic |
|
igneous |
The Earth's rocks fall into three categories based on how they're formed. Igneous rock (granite, basalt, obsidian) is formed from the hardening of molten rock (lava), sedimentary rock (shale, sandstone, coal) is formed by the gradual despositing and cementing of rock and other debris, and metamorphic rock (marble, slate, quartzite) which is formed when existing rock is altered though pressure, temperature, or chemical processes.
In the classification of life, which of the following is not a domain?
animalia |
|
bacteria |
|
archaea |
|
eukaryota |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
pH is a scale that measures of how basic or acidic a solution is. A solution with a pH of 9 is:
acidic |
|
water |
|
alkaline |
|
neutral |
An acid is a substance that gives up positively charged hydrogen ions (H+) when dissolved in water. A base (alkaline) gives up negatively charged hydroxide ions (OH-) when dissolved in water. pH is a scale that measures of how basic or acidic a solution is. Numbered from 0 to 14, solutions with a pH of 7 are neutral, less than 7 are acidic, more than 7 are alkaline.