Science Quiz

A wagon is pushed in a straight line. How would an increase in friction on the wagon wheels affect the wagon?

• It would cause the wagon to move faster.

• It would cause the wagon to change mass.

• It would cause the wagon to change direction.

• It would cause the wagon to slow down.

A runner measured the time it took him to run 5 km. What can he calculate from the distance and time measurements?

• direction

• mass

• speed

• force

Which best explains why a bicycle slows down when its brakes are applied?

• The brakes heat the rubber on the bicycle tires.

• The brakes add energy to the bicycle.

• The brakes increase the force of gravity on the bicycle.

• The brakes cause frictional forces on the wheels of the bicycle.

Jason fills a glass container completely with water and screws the lid on tightly. He places the container in a freezer. Which will most likely result?

• The container will prevent the water from freezing.

• The water will freeze and take up less space in the container.

• The water in the container will expand when it freezes and cause the container to crack.

• The container will absorb heat from the water, causing it to crack.

Which is most responsible for the changes in seasons?

• the jet stream

• the ocean currents

• the distance from Earth to the sun

• the tilt of Earth on its axis

Which type of animal usually eats both producers and consumers?

• an omnivore

• a carnivore

• a herbivore

• a predator

In North Carolina, the wind is blowing from the north. If the wind changes direction and begins to blow from the south, what will most likely result?

• The temperatures will increase.

• The temperatures will decrease.

• The air pressure will increase.

Which best explains why a storm that affects an area in the western United States may affect an area in the eastern United States a few days later?

• The jet stream winds blow storms from east to west.

• The jet stream winds blow storms from west to east.

• Cool Gulf Stream water causes storms to form in the east.

• Warm Gulf Stream water causes storms to form in the west.

Which is a characteristic of most single-celled organisms?

• They have a complex nervous system.

• They contain several different types of cells.

• They perform all life processes.

• They have a circulatory and a respiratory system.

Which statement best describes how a multicellular organism survives?

• Every cell carries out the same functions for the survival of the organism.

• The cells all have the same structures that allow the organism to survive.

• All life processes are performed by each cell for the survival of the organism.

• The cells have different functions, and together they are essential for the survival of the organism.