Question

8. Nuclear energy is one of the cleanest and efficient energy sources. Which of the
following minerals are used as a source of this type of energy?
A. Carbon B. Chromium C. Silver D. Uranium
9. Which of the following metals are mainly used for aircraft components because they are
light weight and durable? a. Aluminum B. Chromium C. Nickel D. Steel
10. Tooth extraction leaves an empty gum that affects an individual's speaking and eating
ability. To address this problem, dentists used light metallic mineral to implant tooth on the
affected gum. What metallic mineral is used by the dentists?
a. Calcium B. Gold C. Silver D. Titanium
11. Calaca Power Plant is one of the Power Plants that is powered by organic mineral
mined at Semirara island. What organic mineral is used in the power plant?
A. charcoal B. chromium
C. coal
D. uranium
12. Nutrients are essential substances needed by plant to grow. However, due to improper
farming, essential nutrients are depleted in soil. That is why, farmers use fertilizer to
supplement the mineral lost. What are the components of fertilizers?
A. aluminum, iron and copper B. potassium, nitrogen, and carbon C. calcium, magnesium D. Potassium, phosphorus, and nitrogen​

Answer 1

Answer:

8)d_uranium

11)c-coal

12)d- potassium phosphorus and nitrogen

Answer 2

8. Of the following minerals  (D). Uranium is used as a source of nuclear energy

9. Light weight and durable metal used in aircrafts is (A). Aluminium

10. Light metallic mineral used in tooth implants is (D). Titanium

11. The organic mineral used in Calaca power plant is (C). Coal

12. The components of fertilizers are (D). Potassium, phosphorus, and nitrogen​

Explanation:

• Uranium is one of the most popular fuel used as a Nuclear power source especially U-235. Its atoms split easily during nuclear fission reactions.
• Aluminium is lightweight, durable and has low density. Hence it is a popular metal used in manufacturing aircraft components.
• Titanium is biocompatible and easily fuses with the bone. It is easy to customize and has a high success rate. Hence it is widely used in dentistry.
• The Calaca power plant is a thermal power plant and the organic mineral used in this power plant is coal.
• The three main macronutrients used in fertilizers are Potassium (K), Phosphorus (P) and Nitrogen (N). A (10-10-10) fertilizer contains ten percent of each of these macro nutrients.