Winter sport

2. – a force caused by two surfaces rubbing together that acts in the opposite direction to movement.
4. - the sugars that carbohydrates are made of
6. system – the body system that allows blood to travel around the body, delivering oxygen and nutrients and removing waste products.
7. – how fast something can travel.
10. – the ability to bend and move joints easily.
13. respiration – a chemical reaction in cells that uses oxygen to release energy from glucose.
16. pair – a pair of muscles that work together to move a bone, with one muscle contracting while the other relaxes.
17. distance – the total distance travelled before an object stops, made up of thinking distance plus braking distance.

1. - the building blocks of proteins
3. – being physically fit and healthy.
5. – biological catalysts that speed up chemical reactions in the body, such as digestion.
8. system – the group of organs responsible for taking in oxygen and removing carbon dioxide, including the lungs, trachea, and diaphragm.
9. – how physically strong a person or object is.
11. – tiny air sacs in the lungs that increase surface area for efficient gas exchange.
12. – the physical and mental ability to continue an activity for a long period of time.
14. system – the group of organs that break down food so nutrients can be absorbed, including the mouth, stomach, and intestines.
15. diet – a diet that contains the correct proportions of carbohydrates, fats, proteins, vitamins, minerals, and water needed to maintain good health.