Benchmark Review

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? (5.5C)

• 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?

Tags

NGSS.5-PS1-3

A scientist is testing the effect of different fertilizers on plant growth. She uses four different types of fertilizers on four identical plants and measures their growth over a month. What is the independent variable in this experiment?

• Type of fertilizer

• Amount of water

• Growth of plants

• Type of plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which of the following best describes the process of photosynthesis?

• Conversion of chemical energy into light energy

• Conversion of light energy into chemical energy

• Conversion of oxygen into carbon dioxide

• Conversion of carbon dioxide into oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A student measures the temperature of a substance as it is heated. The temperature remains constant for a period of time before rising again. What is happening during the period when the temperature is constant?

• The substance is boiling

• The substance is melting

• The substance is freezing

• The substance is condensing

Tags

NGSS.MS-PS1-4

Which of the following is an example of a chemical change?

• Melting of ice

• Boiling of water

• Rusting of iron

• Breaking of glass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the primary function of the roots of a plant?

• To absorb sunlight

• To produce flowers

• To anchor the plant and absorb water and nutrients

• To produce seeds

Tags

NGSS.MS-LS2-1

In an experiment, a student wants to test the effect of temperature on the solubility of sugar in water. What should be the dependent variable?

• Amount of sugar

• Temperature of water

• Volume of water

• Solubility of sugar

Which of the following best explains why ice floats on water?

• Ice is denser than water

• Ice is less dense than water

• Ice has a higher temperature than water

• Ice has a lower temperature than water

What is the role of chlorophyll in photosynthesis?

• To absorb water

• To absorb sunlight

• To absorb carbon dioxide

• To absorb oxygen

Tags

NGSS.MS-LS1-6

A student observes that a metal rod expands when heated. What type of energy is primarily responsible for this expansion?

• Chemical energy

• Kinetic energy

• Thermal energy

• Potential energy

Tags

NGSS.MS-PS1-4