Science Flashcards
7 cards from real BMST 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
Which of the following best describes a chemical change?
Answer: Iron rusting over time
Rusting is a chemical change because iron reacts with oxygen to form a new substance, iron oxide.
What force keeps planets in orbit around the Sun?
Answer: Gravity
Gravity is the attractive force between masses that keeps planets in their orbital paths around the Sun.
In a food chain, organisms that make their own food using sunlight are called:
Answer: Producers
Producers (mainly plants) use photosynthesis to convert sunlight into food energy.
Which type of wave requires a medium to travel through?
Answer: Mechanical wave
Mechanical waves, such as sound, need a physical medium (solid, liquid, or gas) to propagate.
What is the term for the number of protons in the nucleus of an atom?
Answer: Atomic number
The atomic number defines an element and equals the number of protons in its nucleus.
Which of the following is an example of a renewable energy source?
Answer: Wind power
Wind power is renewable because wind is a naturally replenishing resource that will not run out.
During photosynthesis, plants absorb carbon dioxide and release which gas?
Answer: Oxygen
Photosynthesis converts CO₂ and water into glucose and oxygen using light energy.