End of Year Science

The video shows temperature affected by convection currents in the air. Which BEST explains how heat is transferred by convection in the air?

• hot air rises and cold air rises

• hot air sinks and cold air rises

• hot air rises and cold air sinks

• hot air sinks and cold air sinks

When a frog breathes through its skin, which of the following does it take in?

• carbon dioxide

• food energy

• heat

• oxygen

Which body system exchanges oxygen for carbon dioxide in humans?

• muscular

• digestive

• endocrine

• respiratory

Which explains why the bubbles move to the surface of the water in the video?

• The air in the bubbles is less dense than the water.

• The air reacts with the water, forming bubbles.

• The air is expanding to fill the container.

• The air causes the water to boil.

Tags

NGSS.MS-PS2-5

How does a person's skin BEST protect them from infection?

• It stretches to allow movement.

• It reflects harmful rays of sunlight.

• It senses changes in temperature.

• It provides a barrier from the environment.

Students investigate how different materials can be used as insulators for ice buckets. Which bucket do you think will be the best insulator?

• styrofoam bucket

• metal bucket

• glass bucket

• plastic bucket

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

This student wants to find out which flower color the bumble bees at the park are found on the most. With which step should start her investigation?

• identify the types of insects found at the park

• count the number of bumblebees found at the park

• record the different colors of flowers found at the park

• observe the time of day bumblebees are found at the park

The school globe shows the correct tilt of Earth. Which of these would happen when Earth completes a rotation around its axis?

• oceans on Earth would be smaller

• there would be lees sunlight on earth

• one day on Earth would have passed

• temperatures would be lower at Earth's poles

Tags

NGSS.MS-ESS1-1

On the food web, which organism other than the fox has no predators?

• owl

• grasshopper

• frog

• clover

The snow cone is served in a foam cup. What property of the foam cup makes it MOST useful for holding a snow cone?

• It insulates heat well.

• It insulates sound well.

• It conducts heat easily.

• It conducts sound easily.