CTET Science Flashcards
7 cards from real CTET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 CTET Science flashcards as text
A teacher asks students why a thick glass tumbler cracks when boiling water is poured into it. The best scientific explanation is:
Answer: Uneven thermal expansion causes stress in the glass
The inner surface of thick glass expands quickly while the outer surface remains cool, creating uneven thermal stress that cracks it.
Which type of rock is formed from the cooling and solidification of magma or lava?
Answer: Igneous rock
Igneous rocks form when molten magma (underground) or lava (on the surface) cools and solidifies.
What is the main cause of seasons on Earth?
Answer: Earth's axial tilt of 23.5 degrees
Earth's axial tilt of 23.5° causes different hemispheres to receive varying amounts of sunlight throughout the year, creating seasons.
Which microorganism is responsible for the fermentation of milk into curd (yogurt)?
Answer: Lactobacillus
Lactobacillus bacteria ferment lactose in milk into lactic acid, which causes the milk to curdle and form yogurt.
An object placed beyond the center of curvature (2F) of a convex lens forms an image that is:
Answer: Real, inverted, and diminished
When an object is placed beyond 2F of a convex lens, the image formed is real, inverted, and diminished (smaller than the object).
Which nutrient is most important for the growth and repair of body tissues?
Answer: Proteins
Proteins are the building blocks of the body and are essential for growth, repair, and maintenance of all body tissues.
In the context of teaching science, what does 'inquiry-based learning' primarily emphasize?
Answer: Students asking questions and discovering answers through investigation
Inquiry-based learning centers on students posing questions, designing investigations, and constructing knowledge through their own exploration.