Physical Science Principles Flashcards
7 cards from real AFOQT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Physical Science Principles flashcards as text
What kinetic energy does a 4 kg object moving at 3 m/s have?
Answer: 18 J
Kinetic energy is ½mv² = ½ × 4 × 3² = 18 J.
Which gas is most abundant in Earth's atmosphere?
Answer: Nitrogen
Nitrogen makes up about 78% of Earth's atmosphere.
What does a catalyst do in a chemical reaction?
Answer: It speeds up the reaction without being consumed
A catalyst increases reaction rate without being used up in the reaction.
Which type of charge do two protons exert on each other?
Answer: Repulsive
Like charges repel, so two positively charged protons push apart.
What is the acceleration due to gravity near Earth's surface (approximate)?
Answer: 9.8 m/s²
Gravitational acceleration near Earth's surface is about 9.8 m/s².
Which process changes a gas directly into a liquid?
Answer: Condensation
Condensation is the phase change from gas to liquid.
In Ohm's law, voltage equals current multiplied by what?
Answer: Resistance
Ohm's law states V = I × R, where R is resistance.