Which of these carries information and signals to and from the brain? 3 Muscles Veins Nerves
What is the general name given to the heart and blood vessels? 1 The circulatory system The nervous system The digestive system
What is digestion? 3 The movement of blood around the body The sending of messages to and from the brain The breaking down of food into small pieces inside the body
How is a shadow made? 2 By light passing through an object By an object blocking light By no light being shone
How many types of flowering plants are there? 2 About 50,000 About 250,000 About 5 million
What is the main job that proteins carry out inside the body? 1 They help repair body tissues and make the body grow. They help keep the body warm. They give the body energy.
What is the main job that carbohydrates carry out inside the body? 2 They help keep the body warm. They give the body energy. They help repair body tissues and make the body grow.
What is the main job that fats carry out inside the body? 3 They help repair body tissues and make the body grow. They defend against viruses. They help keep the body warm.
What is the general name given to the stomach, liver, and intestines? 2 The lymphatic system The digestive system The nervous system
What is the name of the seed container that grows from a pollinated flower? 2 A petal A fruit Nectar
What happens to gases when they are cooled below their boiling point? 1 They turn into liquids. They do not change. They turn into solids.
How many chambers are there in the heart? 2 Two Four Six
What is a stethoscope? 3 An instrument for telling the time An instrument for measuring wind speed An instrument for listening to the heart beat
What is heat? 3 A type of force A type of light A type of energy
What is a filament? 1 A piece of metal wire found inside a light bulb Part of a flower A type of animal
What is the name for what you can see in a mirror? 2 A reflex A reflection A spectrum
Which of these is a woodwind instrument? 2 A tambourine A flute A guitar
What type of vision do humans have? 3 Telescopic vision X ray vision Binocular vision
What happens when muscles contract? 2 They get longer. They get shorter. They stay the same.
What is the pitch of a sound? 2 How loud it is How high or low it is How far it can travel
What is a reflex action? 2 A type of friction Something your body does automatically A type of pulley
What is the general name given to the parts of the body we use to breathe? 3 The nervous system The circulatory system The respiratory system
Which nutrient found in foods such as fish helps the body to grow? 1 Proteins Carbohydrates Fats
Which nutrient found in bread gives the body energy? 2 Fats Carbohydrates Proteins
Which nutrient found in nuts helps keep the body warm? 3 Carbohydrates Proteins Fats
What are neurons? 1 Bundles of living cells that make up nerves Bundles of living cells that make up blood Bundles of living cells that make up bones
What is the name for the tube that carries food from the throat to the stomach? 1 The esophagus The windpipe The trachea
What is the weight of an object? 2 Its density The force of gravity pulling it down Its surface area
What is a fulcrum? 1 The turning point for a lever A bone in the arm A type of cloud
What is precipitation? 2 A steep slope Rain, hail, or snow A type of cloud
What is a pulley? 1 A machine for changing the direction of a force A type of force A type of lever
What is a gear? 3 A type of piston A type of lever A toothed wheel
In general, an object with a low center of gravity will 2 Fall over easily Be very stable Rise upward
In general, an object with a high center of gravity will 1 Fall over easily Be very stable Rise upward
Why do modern cars have streamlined shapes? 1 It helps them move more easily. It makes them move more slowly. Their shape makes no difference to the way cars move.
Which of these is an electrical conductor? 2 Wood Copper Plastic
Which of these is an electrical insulator? 3 Copper Iron Plastic
