| Questions | 5 |
| Topics | Element, Fronts, Minerals, Primary Consumers, Weight |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
Small quantities of certain minerals like iron, calcium, magnesium, and salt are important for nutrition and health.
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
Weight is a force that describes the attraction of gravity on an object. Force is measured in newtons (N) with 1 N being the force required to impart an acceleration of 1 m/s2 to a mass of 1 kg.