Science Discovery Grade 5

The smallest type of blood vessel is the __________.

• nerve

• capillary

• vein

• artery

Which is not a way to prevent the spread of diseases?

• Wash your hands well with soap.

• Cover your mouth and nose with a tissue when sneezing or coughing then dispose it safely.

• Share cups, plates or cutlery with other people.

• Keep cuts and other wounds clean and covered.

Choose three PHYSICAL BARRIERS that keep pathogens from entering your body.

• eyelashes

• stomach acid

• ear wax

• skin

How many food chains can you find in this food web?

• 5

• 6

• 7

• 8

What happens to plastic items in landfill?

• They never change and stay exactly as they were when they were put intothe bin

• They are melted and recycled into new products

• They break into microplastics and contaminate the soil and waterways

• They are absorbed into the ground and eventually turn back into oil

Identify the type of change happening in this picture.

• Chemical Change

• Endothermic Reaction

• Exothermic Reaction

• Physical Change

Wires carrying electricity are usually covered with plastic to keep them from starting a fire. Why does the plastic keep the electricity from starting a fire?

• Plastic is softer than wire.

• Plastic can melt when heated.

• Plastic conducts electricity.

• Plastic is a good insulator.

What is an example of an ecosystem?

• A deer

• A group of deers

• A group of deers, the sun, rabbits, the lake, the soil, a bird, a tree

• A group of deers, rabbits, a bird, and a tree

An animal that eats other animals is a______

• Carnivore

• Omnivore

• Herbivore

• Decomposer

Worms, bacteria and other small living things help recycle nutrients in an ecosystem by feeding on dead things. They are_____.

• Consumers

• Producers

• Predators

• Decomposers