6th Grade Spring Semester Review 2024-25

The class was investigating changes in the water cycle. Students were taking turns collecting water from the sink. What should the students do to conserve water during their investigation?

• A move quickly through the line

• B turn the water off after each student

• C make the water flow faster

• D pour extra water down the sink

Students are comparing the densities of different liquids. What safety equipment should the students use in this investigation?

• aprons and safety goggles

• first aid kit and aprons

• safety goggles and helmet

• gloves and first aid kit

Students have been conducting an experiment to see what occurs when two chemicals are mixed together in a glass beaker. After the reaction occurs a new copper-looking material is present at the bottom of the beaker. How should the student dispose of the material after the experiment is over?

• Pour the leftover material down the drain.

• Dispose of the leftover material in the trash can.

• Follow the teacher directions.

• Put the materials back in the original container.

Tags

NGSS.MS-ESS3-3

Biotic components of ecosystems include —

• all living factors in a given area

• all living and non-living factors

• anything in the physical environment

• all forms of symbiosis

Drought, erosion, flood, and prolonged heat spells are examples of —

• abiotic changes within an ecosystem which can affect biotic factors

• biotic factors within an ecosystem which affect abiotic components

• populations

• communities

Tags

NGSS.MS-LS2-4

Which statement below refers only to biotic components in an ecosystem?

• Evaporation, transpiration, and precipitation are complex processes that cycle water between the atmosphere and the Earth's surface.

• Photosynthesis and respiration are not considered atmospheric processes.

• Vegetation is an indicator of several environmental factors, including precipitation, temperature, soil, geology, and wind.

• In Yellowstone Park, shrubs have expanded their range into large areas formerly populated by short grasses, due to overgrazing and trampling by livestock.

Which of the following statements represents an abiotic change?

• A. A giraffe eats up to 35 kg of vegetation daily.

• B. Due to the decrease in bobcat numbers, white tail deer are experiencing extreme overpopulation in certain counties.

• C. The southwest experienced a decline in yucca population due to a decrease in natural pollinators.

• D. Water flow velocity increases in a stream after spring rains.

The beavers have interacted with their environment as shown in the picture to the left. What changes have the beavers made to their environment?

• The beavers have decreased the river flow by making a dam.

• The beavers have pulled leaves off the trees.

• The beavers have made the grass grow taller.

• The beavers have cut down trees to make a dam.

• The beavers have drank most of the river water.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following statements accurately describe the competition that occurs between organisms within an ecosystem?

• Competition between organisms is a result of resources being limited.

• Organisms only compete for the biotic factors in an ecosystem.

• Competition between organisms is a result of resources being unlimited.

• Organisms compete for both biotic factors and abiotic factors in an ecosystem.

• Organisms only compete for the abiotic factors in an ecosystem.

Tags

NGSS.MS-LS2-1

What best explains the variation in tree heights in the tropical rain forest?

• grazing patterns of herbivores

• competition for light and moisture

• fewer nutrients are available to the shorter trees

• the intense heat causes the trees to be shorter than similar trees in other biomes

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5