GMAS Science Unit 2

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

The placement of the magnet on the other side of the glass will not affect the attraction of the iron shavings to the magnet.

• True

• False

Tags

NGSS.MS-PS2-5

A light bulb that is powered by a circuit is considered an example of human-harnessed electricity. Which BEST explains why the light bulb uses human-harnessed electricity?

• The light bulb can be turned on and off.

• The light bulb gives off light to its surroundings.

• The light bulb needs to interact with other objects.

• The light bulb is powered by the movement of electrons.

Tags

NGSS.4-PS3-2

NGSS.4-PS3-4

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. The book does not change the direction of the magnet.

• B. Adding the book changes the magnetic properties of the paper clip. The magnetic properties of the paper clip are not changed by the book.

• C. Adding the book changes the poles of the paper clip from north to south. The poles of the paper clip are not changed by the addition of the book.

• D. Adding the book changes the magnetic force between the paper clip and magnet. The thicker book increases the distance between the magnet and the paper clip, which reduces the magnetic force.

Tags

NGSS.3-PS2-3

A student wishes to investigate how different materials affect the magnetic field of an object. Which would be the BEST method for the student to use in her investigation?

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Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Alvin and Marcus each rub identical balloons quickly against their hair, creating negative charges in the balloons. What will most likely happen if the boys place their balloons near each other?

• They will repel each other because they each have the same charge.

• They will attract each other because they each have the same charge.

• Both balloons will release their negative charges into the air and become positively charged.

• One balloon will transfer its negative charge to the other and both will become positively charged.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Select two examples of electric charges.

• A glass rod attracts a small piece of paper after it is rubbed with a wool cloth.

• A balloon sticks to the wall after being rubbed against a student's hair.

• An iron nail moves toward a bar magnet after the two are placed close to each other.

• A steel ball falls vertically to the ground after it is released from a height.

• A laboratory cart rolls across the floor after it is pushed by a student.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What materials did Kyle and Gita use to design their simple circuit?

• Battery, wire, LED light, switch

• Battery, wire, buzzer, switch

• Battery, resistor, LED light, switch

• Battery, wire, fan, switch

Tags

NGSS.3-5-ETS1-1

What is the purpose of the switch in the circuit?

• To provide power

• To turn the circuit on or off

• To light up the LED

• To connect the wires

Tags

NGSS.3-PS2-3

NGSS.4-PS3-2

NGSS.4-PS3-4

In which of the circuits shown in the picture will the LED light turn on when the switch is in the 'On' position?

• Circuits: 1,3,4

• Circuits: 2,5,6

• Circuits: 1,3,6

• Circuit 3,4,6