Circulatory system
Question: Which organ pumps blood around the body?
Answer: Heart
Question: Which organs help us breathe?
Answer: Lungs
Question: Where does digestion begin?
Answer: Mouth
Question: What do we call a diet with the right amounts of different nutrients?
Answer: Balanced diet
Question: What makes sound?
Answer: Vibrations
Question: What carries oxygen and nutrients around the body?
Answer: Blood
Question: Which gas do we breathe in to stay alive?
Answer: Oxygen
Question: Which organ mixes food with digestive juices?
Answer: Stomach
Question: Which nutrient helps the body grow and repair tissues?
Answer: Protein
Question: What do we call how high or low a sound is?
Answer: Pitch
Question: What are the tubes that carry blood called?
Answer: Blood vessels
Question: What is the name of the windpipe?
Answer: Trachea
Question: Which organ absorbs most nutrients?
Answer: Small intestine
Question: What do we call tiny living things, some of which cause diseases?
Answer: Microorganisms
Question: What happens to pitch when vibrations become faster?
Answer: Pitch becomes higher.
Question: What happens to your pulse rate when you exercise?
Answer: It increases.
Question: Which muscle below the lungs helps us breathe?
Answer: Diaphragm
Question: What is the main job of the large intestine?
Answer: To absorb water from undigested food.
Question: Name two ways to stop the spread of infectious diseases.
Answer: Wash hands and cover coughs or sneezes.
Question: Why does hitting a drum harder make a louder sound?
Answer: It causes stronger vibrations, increasing the volume.
Question: Why does the heart beat faster during exercise?
Answer: To supply working muscles with more oxygen and nutrients.
Question: Where does oxygen move into the blood?
Answer: In the tiny air sacs (alveoli) in the lungs.
Question: Put these in the correct order: stomach, mouth, small intestine, oesophagus.
Answer: Mouth → oesophagus → stomach → small intestine.
Question: Why does our body need different types of food?
Answer: To get the different nutrients needed for health, growth and energy.
Why can astronauts not hear each other speaking directly in space?
Answer: Because sound needs a medium (solid, liquid, or gas) to travel, and space is a vacuum