AFCT General Science Concepts 3

Question 1

What is the smallest unit of an element that retains its chemical properties?

Accepted Answer

Atom

Answer

An atom is the smallest unit of an element that maintains the chemical properties of that element.

Question 2

Which organ in the human body is responsible for filtering blood and producing urine?

Accepted Answer

Kidney

Answer

The kidneys filter waste products from the blood and produce urine as part of the excretory system.

Question 3

What is the process by which plants convert sunlight into chemical energy?

Accepted Answer

Photosynthesis

Answer

Photosynthesis is the process where plants use sunlight, water, and carbon dioxide to produce glucose and oxygen.

Question 4

What force keeps planets in orbit around the sun?

Accepted Answer

Gravitational force

Answer

Gravity is the force that keeps planets in orbit by pulling them toward the sun while their orbital velocity prevents them from falling into it.

Question 5

Which state of matter has a definite volume but no definite shape?

Accepted Answer

Liquid

Answer

A liquid has a definite volume but takes the shape of whatever container holds it.

(AFCT) Armed Forces Classification Test Practice Test