3.02 Review

Which particle is transferred from one object to another to create a static charge?

• proton

• electron

• atom

• molecule

Tags

NGSS.MS-PS2-5

What happens when a glass rod is rubbed with a silk cloth?

• Electrons move from the atoms in the silk to the atoms in the glass rod, causing the glass rod to have a negative charge.

• Electrons are shared equally between the atoms of the glass rod and the atoms of the silk, making both electrically neutral.

• Everyday objects do not have electric charges, so neither the glass rod nor the silk can gain or lose electrons.

• Electrons move from the atoms in the glass rod to the atoms in the silk, causing the silk to have a negative charge.

Tags

NGSS.MS-PS2-3

What is the primary reason for thunderstorms?

• Electrical charges build up in the clouds.

• Electrical charges build up on the ground.

• Electrical charges build up in the clouds and on the ground.

• Electrical charges build up in the space between the clouds and the ground.

Tags

NGSS.MS-ESS2-5

When a magnesium atom forms an ion, it loses two electrons.

What is the electrical charge of the magnesium ion?

• -2

• -1

• +1

• +2

When a sodium atom forms an ion, it loses one electron.

What is the electrical charge of the sodium ion?

• -2

• -1

• +1

• +2

When a chlorine atom forms an ion, it gains one electron.

What is the electrical charge of the chlorine ion?

• -1

• -2

• +1

• +2

What happens when two objects with the same electric charge come into contact?

• They attract each other due to the difference in charge.

• They repel each other due to the similarity in charge.

• They neutralize each other's charge.

• They create a magnetic field.

Tags

NGSS.MS-PS2-3

Can two positively charged balloons repel each other without any physical contact? Explain your answer.

• Yes, because protons from one balloon jump to the other and push it.

• Yes, because electric charges have electric fields surrounding them that allow them to exert forces on other objects without touching them.

• No, because objects have to touch to exert forces that attract and repel.

• No, because the space between objects is actually filled with charged particles that all interact.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5