MCAS Review Science

A student removes a pitcher of chilled lemonade from a 5°C refrigerator and leaves the pitcher in a 20°C room for

several hours. Which of the following statements best describes the flow of energy during this time?

• Cold energy flows from the lemonade to the room until the room

  is colder than the lemonade.

• Heat energy flows from the room to the lemonade until the lemonade is warmer than the room.

• Cold energy flows from the lemonade to the room until the

  lemonade and the room are the same temperature.

• Heat energy flows from the room to the lemonade until the lemonade and the room are the same temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A student makes a ball-and-stick model of a propane molecule, as shown below. The black balls represent carbon atoms, and the white balls represent hydrogen atoms.

Based on the model, what is the chemical formula of propane?

• C₃H₈

• C₃H₁₀

• 3CH

• 3CH₈

Tags

NGSS.MS-PS1-1

The diagrams represent the movement of particles in two samples of the same gas. The samples are in identical, closed, glass containers. The length of an arrow represents the speed of a gas particle.

Which of the following must be different between the two samples?

• color

• mass

• temperature

• volume

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the following best describes a mixture?

• a material that is made up of many molecules

• a substance that can be changed into another substance

• a material that contains two or more different substances

• a substance that has been broken down into its smallest parts

Which organ system is responsible for transporting nutrients and oxygen to the cells?

• Digestive system

• Circulatory system

• Respiratory system

• Nervous system

Which of the following is a property that can be used to identify a substance?

• Color

• Smell

• Density

• All of the above

Which of the following best defines science?

• A collection of unchangeable facts about the natural world

• The study of the natural world through observation, identification, description, experimental investigation, and theoretical explanations

• A belief system based on assumptions about the natural world

• A method for proving theories beyond doubt

Tags

DOK Level 1: Recall

What is the term for the variety of life in the world or in a particular habitat or ecosystem?

• Ecology

• Biodiversity

• Conservation

• Evolution

Tags

NGSS.MS-LS2-5

Which of the following is NOT a physical change?

• Boiling water

• Dissolving sugar in water

• Burning wood

• Freezing water

Tags

NGSS.MS-PS1-4

What is a common method for scientists to communicate their research findings?

• Through artistic performances

• By publishing in scientific journals

• By creating infomercials

• Through political debates

Tags

DOK Level 1: Recall