KS2 Science Flashcards

What is the function of the large intestine?

Answer: To absorb water and pass out waste as faeces

The large intestine's main function is to absorb water from undigested food material. The remaining solid waste forms faeces, which is stored in the rectum before being excreted.

What is electrical resistance?

Answer: How much a material opposes the flow of electrical current

Electrical resistance is the opposition to the flow of electric current in a circuit. It is measured in Ohms (Ω). Materials with high resistance slow the current; those with low resistance (conductors) allow it to flow easily.

What is the difference between a herbivore and a producer in a food chain?

Answer: A producer makes its own food; a herbivore eats plants

Producers (usually plants) make their own food through photosynthesis. Herbivores are animals that consume plants (primary consumers). In a food chain: plant (producer) → herbivore → carnivore.

What does it mean when forces on an object are 'balanced'?

Answer: The object stays still or continues at constant speed

When forces are balanced (equal in size and opposite in direction), there is no resultant force. The object either stays still or moves at a constant speed in a straight line (Newton's First Law).

What is the name for the layer of gases surrounding the Earth?

Answer: Atmosphere

The atmosphere is the layer of gases (mainly nitrogen ~78%, oxygen ~21%, and small amounts of other gases) surrounding the Earth. It protects life from harmful radiation and provides the air we breathe.

What causes day and night on Earth?

Answer: The Earth rotating on its axis

Day and night are caused by the Earth rotating (spinning) on its own axis once every 24 hours. The side facing the Sun has day; the side facing away has night.