KS2 Science Flashcards

What do we call the force that pulls objects towards the Earth?

Answer: Gravity

Gravity is the force of attraction between objects with mass. Earth's gravity pulls everything towards its centre, which is why objects fall when dropped and why we stay on the ground.

Which part of the plant contains seeds and is often eaten as fruit?

Answer: Ovary (fruit)

After fertilisation, the ovary of a flowering plant develops into a fruit containing seeds. Fruits (which include tomatoes, peas in pods, and apples) protect and help disperse the seeds.

What is the role of white blood cells?

Answer: To fight infections and disease

White blood cells are part of the immune system. They defend the body by attacking and destroying pathogens (bacteria, viruses). Some produce antibodies; others engulf and destroy germs.

What type of rock is formed from cooled magma or lava?

Answer: Igneous

Igneous rock is formed when magma (molten rock underground) or lava (molten rock above ground) cools and solidifies. Examples include granite and basalt.

What is the correct order of the life cycle of a butterfly?

Answer: Egg → caterpillar → chrysalis → butterfly

A butterfly's life cycle has four stages: egg → larva (caterpillar) → pupa (chrysalis) → adult (butterfly). This process of four stages is called complete metamorphosis.

What happens to the particles in a substance when it is heated?

Answer: They move faster and spread apart

When a substance is heated, its particles gain energy and move faster. In solids this causes expansion; in liquids and gases the particles can move further apart, potentially changing state.