Warm-up: March 21, 2025

The image shows an aquatic food web at Lake Jordan in North Carolina. Lake Jordan is used for recreational activities and as a water supply. Scientists monitor the lake to ensure human activities are not harming the ecosystem and the water quality. Which would be a biological indicator of a decrease in the lake's water quality?

• an increase in the number of different species
• a decrease in the number of different species
• an increase in pollution from recreational activities
• a decrease in pollution from recreational activities

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

How will the student's project help reduce human impact on the environment?

• The student's project will help waste fresh water, a limited resource that is needed by all plants and animals for survival
• The student's project will help conserve fresh water, an abundant resource that is needed by all plants and animals for survival
• The student's project will help waste fresh water, an abundant resource that is needed by all plants and animals for survival
• The student’s project will help conserve fresh water, a limited resource that is needed by all plants and animals for survival

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

A hydroelectric dam is built on a river. Scientists conduct studies before and after the dam's construction to understand its impact on the local environment. The table shows the data. Based on the data, which BEST supports the claim that the dam has a negative impact on the environment?

• There was an increase in the sediment buildup in the river.
• There was a decrease in riverbank plant diversity.
• There was a decrease in the water quality index.
• There was an increase in the fish population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Researchers have developed automobile engines that run on vegetable oil. Many tests are being carried out to improve the efficiency of the engine that will soon be comparable to that gasoline engines. How would replacing gasoline engines with vegetable oil engines help society? Choose 2 answers

• It would reduce the overall consumption of gasoline.
• It would shift from using a nonrenewable resource to a renewable one.
• It would decrease the use of renewable resources of energy.
• It would lower the cost of vegetable oil due to higher demand.

Tags

NGSS.MS-ESS3-1

NGSS.MS-ESS3-4

Which diagram BEST describes the differences and similarities between renewable and nonrenewable resources?

• 
• 
• 
• 

The picture below shows water flowing through a dam, spinning a turbine and generating electricity. Which energy resource is shown in the picture?

• geothermal energy, a nonrenewable resource
• natural fluids, a nonrenewable resource
• nuclear energy, a renewable resource
• hydropower, a renewable resource

Tags

NGSS.MS-PS3-5

Which BEST describes the energy usage in the United States?

• Over 90% of the overall energy usage in the United States is from nonrenewable energy source
• About 75% of the overall energy usage in the United States is from nonrenewable energy source
• About 50% of the overall energy usage in the United States is from nonrenewable energy source
• Only 7% of the overall energy usage in the United States is from nonrenewable energy sources
• energy sources.

Indicators used to determine the health of a water system are shown. Which TWO observations are MOST LIKELY from a healthy water system?

• stable biodiversity in the area
• water with low levels of dissolved particles
• a pH value higher than 9.0
• dissolved oxygen level of 5.0 g/ml

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The amount of carbon dioxide released by the three main types of energy used to generate electricity is shown next to their kilowatt-hours of consumption. Carbon dioxide is a greenhouse gas that contributes to the amount of heat trapped on Earth. Use the drop-down menus to describe how energy use is impacting global temperatures. Reducing the amount of _____________ used for energy generation will have the largest impact on decreasing greenhouse gas emissions.

• coal
• natural gas
• oil

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS2-6

The amount of carbon dioxide released by the three main types of energy used to generate electricity is shown next to their kilowatt-hours of consumption. Carbon dioxide is a greenhouse gas that contributes to the amount of heat trapped on Earth. Use the drop-down menus to describe how energy use is impacting global temperatures. Reducing the amount of coal used for energy generation will have the largest impact on decreasing greenhouse gas emissions. This reduction can lead to _________global temperatures over time.

• higher
• lower

Tags

NGSS.MS-ESS3-5