Science Flashcards
7 cards from real BECE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Science flashcards as text
What is the process by which a liquid changes into a gas at its boiling point?
Answer: Vaporization
Vaporization (specifically boiling) is the process by which a liquid rapidly changes to a gas when heated to its boiling point.
Which organ is primarily responsible for filtering waste from the blood?
Answer: Kidneys
The kidneys filter waste products and excess substances from the blood to produce urine, which is then excreted.
What is the SI unit of force?
Answer: Newton
The Newton (N) is the SI unit of force, defined as the force needed to accelerate a 1 kg mass at 1 m/s².
Which of the following is an example of a chemical change?
Answer: Wood burning
Burning wood is a chemical change because it produces new substances (ash, carbon dioxide, water vapor) that cannot easily be reversed.
How many chromosomes do normal human body cells contain?
Answer: 46
Normal human somatic (body) cells contain 46 chromosomes arranged in 23 pairs.
What type of rock is formed from cooled and solidified magma?
Answer: Igneous
Igneous rocks form when magma (molten rock) cools and solidifies, either underground or on the Earth's surface.
Which vitamin is produced by the skin when exposed to sunlight?
Answer: Vitamin D
Vitamin D is synthesized in the skin through a photochemical reaction triggered by ultraviolet (UV) radiation from sunlight.