Physical Science CA Review (P1-P3)

What happens when Arlene places the charged rod near her head?

• A. The rod and Arlene's hair have opposite charges, so her hair becomes attracted to the rod.

• B. The rod and Arlene's hair have the same charge, so her hair becomes attracted to the rod.

• C. The rod transfers charges to Arlene's hair, making them both neutral.

• D. The rod takes charges from Arlene's hair, making them both neutral.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the best explanation for why wires are often made of copper?

• Copper is a metal and electricity does not flow easily through it.

• Copper is a metal and electricity flows easily through it.

• Copper is not a metal and electricity flows easily through it.

• Copper is not a metal and electricity does not flow easily through it.

The picture shows plastic-covered wires. Which statement best describes the plastic and wires in the picture?

• The picture shows a conductor surrounding insulators.

• The picture shows an insulator surrounding conductors.

• The picture shows an insulator surrounding a different type of insulator.

• The picture shows a conductor surrounding a different type of conductor.

Which will most likely happen if two electrically charged objects with like charges are placed near each other?

• They will attract each other.

• They will repel each other.

• They will attract and then repel each other.

• They will repel and then attract each other.

Tags

NGSS.MS-PS2-3

Which of the following is the best definition of static electricity?

• A. electricity that is constantly moving

• B. electricity that does not move anywhere

• C. the buildup of electric charges on an object

• D. the release of neutral charges from an object

A student is investigating with magnets. For the first part of her investigation, she places iron shavings in a glass of water and brings a magnet near the right side of the glass. All of the iron shavings are attracted to the magnet. Her setup is shown. For her second investigation, the student wishes to decrease the number of iron shavings that are attracted to the magnet. Which solution will BEST help the student?

• She can use a glass that is much thicker.

• She can remove the water from the glass.

• She can use water that is a higher temperature.

• She can put the magnet on the other side of the glass.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student is investigating with a bar magnet. She places a sheet of paper between a bar magnet and a paper clip. She observes the paper clip is attracted to the magnet through the piece of paper. Next, she places a book in between the magnet and the paper clip. She observes that the paper clip is not attracted to the magnet. Her investigation is shown. Which BEST explains why the paper clip is not attracted to the magnet through the book?

• A. Adding the book changes the directional flow of the magnet.

• B. Adding the book changes the magnetic properties of the paper clip.

• C. Adding the book changes the poles of the paper clip from north to south.

• D. Adding the book changes the magnetic force between the paper clip and magnet.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following will most likely happen when a person tests the strength of an electromagnet by increasing the number of times he or she wraps a wire in coils around a metal nail?

• The number of metal coils will have no effect on the magnetic field of the electromagnet.

• The magnetic field of electromagnet will increase and then decrease as the number of coils increases.

• The electromagnet will be able to pick up more metal tacks as the number of coils increases.

• The electromagnet will pick fewer metal tacks as the number of coils increases.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student combines water, sugar, and sand in a beaker. The picture shows the mixture. How can the student remove the water from the mixture so the beaker only has sugar and sand left?

• The student can settle the mixture causing the water to sit above the sugar and sand.

• The student can stir the mixture causing the water to blend into the sugar and sand.

• The student can freeze the mixture causing the water to change state.

• The student can heat the mixture causing the water to evaporate.

Tags

NGSS.MS-PS1-2

Evaporation of liquid water to water vapor is a chemical change.

• True

• False