Year 4 Lo 5 – What is energy?

What is a food chain?

• A chain made of food for special types of animals

• A famous recipe designed for animals

• A type of food which is consumed by animals

• How animals depend on other plants and animals for their food and survival (transfer of energy)

What is an animal that hunts and eats other animals called?

• Prey

• Predator

• Eater

• Producer

Living things in an environment need energy to survive. Look at these food chain examples. Choose the correct one.

• Seaweed - -> Snake --> Tadpoles --> Falcon

• Seaweed --> Tadpoles --> Snake --> Falcon

• Seaweed --> Tadpoles --> Falcon --> Snake

• Tadpoles -->Seaweed --> Falcon --> Snake

What is the main source of energy in a food chain?

• Plants

• The Sun

• Animals

• Air

During a science lesson the children were discussing the relationship between animals and plants. Lara told the whole class that animals need plants for their food, but plants do not need animals. Which of these is the best answer?

• Plants are called producers as they make their own food, animals are consumers because they eat food.

• Plants grow best when they have sunlight, water and air. They also need nutrients that may come from dead plants, dead animals or animal manure. So, both plants and animals need each other to survive.

• Plants grow best if they have water and sunlight.

• Plants need only water and nutrients from the soil to grow best.

The following picture shows a lightbulb connected to a battery in an electrical circuit. Which of the following objects connected to Points 1 and 2 will allow the bulb to glow?

• Iron nail

• Plastic spoon

• Rubber band

• Wooden stick

Which of the following is an example of an insulator?

• Iron nail

• Paperclip

• Key

• Plastic straw

John noted that the wire in the fan was broken. He needs to make it safe until it is replaced. He needs to cover it with tape to make it safe. Which type of tape should he use?

• Aluminium tape

• Craft paper tape

• Plastic tape

• Gummed paper tape

Why are electric wires coated in plastic or rubber?

• To prevent you from getting an electric shock.

• To look colourful.

• It is cheaper than leaving the wire without a cover.

• To be more elastic and stretchy.

Nina noted that all electrical plugs have three metal pins, while the rest of the plug is covered with plastic. Why?

• Metal is used to make plugs' pins as it is stronger than plastic.

• The metal pins are needed as conductors, so electricity flows through them while the plastic acts as an insulator and blocks the flow of electricity.

• An electrical plug cannot be made of just one material so we need both plastic and metal.

• Metal and plastic are the most popular materials and they are quite cheap to manufacture.