Science in Elementary Education Flashcards

Which process do plants use to convert sunlight, water, and carbon dioxide into glucose?

Answer: Photosynthesis

Photosynthesis occurs in chloroplasts using sunlight to convert CO₂ and water into glucose and oxygen.

A magnet attracts a paper clip. Which type of force is at work?

Answer: Magnetic force

Magnets exert a magnetic force that can attract ferromagnetic materials like iron, nickel, and steel — including paper clips.

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

Answer: Liquid

Liquids have a definite volume but take the shape of their container — unlike solids (definite shape) or gases (no definite shape or volume).

Earth's seasons are caused by:

Answer: Earth's axial tilt as it orbits the sun

Earth's 23.5° axial tilt means different hemispheres receive more direct sunlight at different points in the orbit, causing seasons.

In the scientific method, what is the purpose of a control group in an experiment?

Answer: To provide a baseline for comparison

A control group receives no treatment and serves as a baseline, allowing scientists to compare results and determine the effect of the variable being tested.

Which characteristic is used to classify animals as mammals?

Answer: Nursing young with milk

Mammals are warm-blooded vertebrates that nurse their young with milk produced by mammary glands — the defining characteristic of the class.