Science M Step

Wind energy is advantageous because it produces little or no pollution. A disadvantage to wind energy is:

• It is nonrenewable.

• Electricity is only produced when the wind is blowing.

• It causes major disruption to the local ecosystem.

• It is very expensive to continually produce electricity.

Below is a chart of how we get our power in the United States. What conclusion can we reach from this information?

• The majority of our power comes from nonrenewable resources.

• We rely heavily on solar and wind energy.

• We are decreasing our use of renewable resources.

• Most of our power comes from hydroelectric plants.

Tags

NGSS.MS-ESS3-4

Fill in the blank in the chart.

• geothermal

• natural gas

• water

• animals

Tags

NGSS.MS-ESS3-1

Which is an example of using geothermal energy to heat a house?

• a furnace that burns natural gas

• an electric heater powered by a nearby coal plant

• a radiator that pumps water deep underground to heat it and returns the water to the surface

• an electric heater powered by solar panels on the rooftop

Tags

NGSS.MS-PS3-3

When a powdered drink mix was added to water, the liquid turned orange. A student decided the taste was too strong, so he poured out half of the liquid and added more water. Which of the following most likely occurred when more water was added?

• The physical state changed.

• The orange color became lighter.

• The liquid had a sweeter taste.

• None of the above

A cook uses the ingredients listed below to prepare a meal.

Which table correctly shows the physical properties of these ingredients when placed in hot water?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A student adds 10 grams of four different powdered solids into four different beakers. The student then adds 100 mL of water to each beaker, stirs the mixtures, and allows them to sit for half an hour before recording observations. Which question is the student most likely trying to answer with this investigation?

• At what water temperature do the substances dissolve?

• How much water is needed to cause a substance to change state?

• What causes a substance to sink when put in water?

• Which substances dissolve in water?

A student classifies the objects shown based on their physical properties. Which property cannot be used to classify these objects into more than one group?

• Magnetism

• Mass

• Electrical conductivity

• Solubility in water

Tags

NGSS.5-PS1-3

A student stirs 15 grams of each substance listed below into 200 milliliters of water to form four different mixtures. The student then tries to separate the water from each mixture by pouring the mixture through a kitchen tea strainer. Which mixture can the student separate most easily with the strainer?

• Salt and water

• Gravel and water

• Shampoo and water

• Sugar and water

Tags

NGSS.MS-PS1-2

Mary has a light bulb and several pieces of copper wire. What else does Mary need to be able to convert electrical energy to light energy?

• battery

• switch

• insulator

• buzzer