Physical Science Review

Wind is increasingly being used as a source of energy. A wind turbine is shown below. What type of energy transformation is the wind turbine designed to do?

• electrical to chemical

• kinetic to electrical

• heat to electrical

• heat to mechanical

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Bryan and Alyssa are playing tug-of-war against Daniel and Maria. Bryan and Alyssa are exerting a combined force of 10 N. Daniel and Maria are exerting 12 N of force. Which of the following has resulted?

• an unbalanced force moving everyone in Bryan and Alyssa's direction

• an unbalanced force moving everyone in Daniel and Maria's direction

• a balanced force moving everyone in Daniel and Maria's direction

• a balanced force leaving everyone in the same place

Tags

NGSS.MS-PS2-2

An atom of an element can be modeled in several ways. The diagram below shows one model of an atom. What can be located in the nucleus?

• protons and neutrons

• protons and electrons

• electrons and neutrons

• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

When automobiles are designed, engineers try to maximize their fuel efficiency. Even with modern technology, today's most efficient vehicles can only attain about 30% efficiency. That means of all the chemical energy of the fuel put into an automobile, only 30% of the fuel results in car motion. Which statement best explains why this happens?

• Most of the energy becomes chemical energy.

• Most of the energy is transformed into mass.

• Much of the energy is transformed into heat.

• Much of the energy is destroyed.

Tags

NGSS.HS-PS3-4

How is the balloon able to pick up the pieces of paper?

• Frictional force is overcoming gravitational force.

• Magnetic force is overcoming electrical force.

• Electrical force is overcoming gravitational force.

• Gravitational force is overcoming magnetic force.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-4

A scientist wants to break down a newly discovered element. She wants to break it down to the smallest particle that retains the element's chemical properties. What particle would the scientist end with after this process?

• a proton

• a molecule

• an atom

• an electron

Lupe and Steve each obtained a container. They then added and mixed different materials in their own container. The table below shows what they added and observed after mixing. Based on the information given, which statement best describes what Lupe and Steve made?

• Both of them made a pure substance.

• They both made a mixture, but only Lupe made a solution.

• They both made a mixture, but only Steve made a solution.

• They both made a solution, but only Steve made a mixture.

A student collects information on two different liquids. The table below compares each of the liquids.

Based on the information given, which statement best describes liquids X and Y?

• Liquid X is a base, and liquid Y is an acid.

• Liquid X is an acid, and liquid Y is a base.

• Both liquids are acids.

• Both liquids are bases.

What characteristic feature of a wave is indicated by the letter C on the diagram below?

• amplitude

• loudness

• wavelength

• frequency

Tags

NGSS.MS-PS4-1

The positively charged particles of an atom are the ________.

• electrons

• protons

• neutrons

• protons & neutrons

Tags

NGSS.MS-PS1-1