8th Grade Science EOG Review

Nuclear power plants pollute the air as much as fossil fuel plants. 

• True

• False

Tags

NGSS.HS-ESS3-4

The most widely used source of renewable energy is biomass. 

• True

• False

Which of these energy sources creates the LEAST amount of environmental pollution?

• natural gas

• geothermal

• oil

• coal

Which statement about using wind turbines for energy is true?

•   Wind turbines produce a large amount of energy.

•   Wind turbines are efficient only in certain areas.

•   Wind turbines occupy a small area of land.

•   Wind turbines create a large amount of pollution.

Tags

NGSS.MS-ETS1-1

What is the most negative environmental consequence of building dams for hydroelectric power?

•   water pollution

•   habitat destruction

•   chemical spills

•   air pollution

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

The graph below shows power production by energy source for the year 2012. Which statement is most likely to be true?

•   The percentage for coal will increase over the next 100 years.

•   The percentages for hydroelectric power and other renewable energy sources will increase over the next 100 years.

•   The percentage for nuclear energy will decrease over the next 100 years.

•   The percentages for petroleum and natural gas will remain the same over the next 100 years.

Tags

NGSS.MS-ESS3-2

Which of these statements about renewable resources is not true?

•   Most renewable resources produce much higher levels of energy than fossil fuels.

•   Many renewable resources can only be used in specific places or conditions.

•   Most renewable resources require expensive technology/equipment.

•   Most renewable resources do not release carbon dioxide or methane.

Read the description of a location on Earth below. Then, decide which energy source(s) would be best for this location. Provide support for your decision.

This location is full of nutrient rich, flat plains, perfect for farming. In the summer, across the country, the wind speeds diminish, but not in this location. The wind speeds remain high, around 50 mph, and will increase during the fall as the weather changes to the cold winter temperatures. On average there are 226 sunny days during the year in the area. The number one crop of the region is corn and there is plenty of land to grow it!

Tags

NGSS.MS-ESS2-6

When sample X is passed through a filter paper a white residue, Y, remains on the paper and a clear liquid, Z, passes through. Which of the following is the best classification for Sample X?

•   as a heterogeneous mixture

•   as a homogeneous mixture

•   as an element

•   as a compound

A spoonful of sugar is stirred into a glass of warm water. Which statement is not true?

•   The sugar and water form a homogeneous mixture.

•   The sugar dissolves, spreading the sugar molecules among the water molecules.

•   The sugar melts and loses mass.

•   The sugar can be separated from the water.

Tags

NGSS.MS-PS1-2