| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
The rows of the Periodic Table of the Elements are called:
groups |
|
periods |
|
families |
|
shells |
The rows of the Periodic Table are called periods and contain elements that have the same number of electron shells ordered from lower to higher atomic number.
Which of the following is the correct order for types of radiation from longest to shortest wavelength?
microwaves → radio waves → visible light |
|
infrared waves → microwaves → ultraviolet light |
|
visible light → ultraviolet light → radio waves |
|
radio waves → visible light → gamma rays |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.
A human heart consists of how many chambers?
1 |
|
2 |
|
4 |
|
8 |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.
A large naturally occurring community of flora and fauna occupying a major habitat is:
a food chain |
|
a biome |
|
a community |
|
a population |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
Which of the following is not a base unit in the metric system?
degree Fahrenheit |
|
liter |
|
gram |
|
meter |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.