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Electric Circuits Answers

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Look at the circuit diagram.

one battery, two light bulbs, and three resistors

one battery, two switches, and three light bulbs

one switch, one resistor, and three light bulbs

one switch, one light bulb, and three batteries

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Which of the following statements best describes why the United States invaded Iraq?

President Bush argued that Saddam Hussein had been the terrorist mastermind behind 9/11.

Most nations in the world wanted to invade Iraq, and the United States agreed to lead the effort.

After 9/11, President Bush declared war on people like Saddam Hussein who had threatened America in a terroristic way.

After 9/11, President Bush argued that a man like Saddam Hussein could not be trusted with WMDs.

Which statement best summarizes Bush’s argument in this passage?

The war was worthwhile, because a free Iraq will be a place for the United States to fight terrorists.

The war was worthwhile, because Iraqis have seen how effectively the United States fights terrorists.

The war was worthwhile, because it has led to democracy in Iraq, which will help deter terrorism.

Why did the United States invade Afghanistan in 2001?

The US wanted to restore order to Afghanistan after the president was killed in a coup.

The US wanted to prevent the Soviet Union from taking over Afghanistan.

The terrorist group responsible for the 9/11 attacks was allowed to operate out of Afghanistan.

The Taliban had stripped away women’s rights and were committing human-rights offenses.

Which of the following statements best describes what is shown on this graph?

After a massive invasion, US troop levels declined from 2001 to 2008.

A few US troops in Afghanistan were followed by a massive surge and then a withdrawal.

Few US troops were present during the war’s early years, followed by a steady climb in their numbers.

When President Bush declared a “war on terror” after 9/11, how did this statement change US foreign policy?

For the first time, the United States would strike at terrorist groups, such as al-Qaeda.

The United States would no longer distinguish between terrorist groups, such as al-Qaeda, and the countries that harbored them.

The United States reserved the right to act in self-defense against terrorist groups.

The United States announced it would invade each member of the “axis of evil,” until they all gave up their WMDs.

Which statement best describes life for women under Taliban rule?

Women enjoyed more freedom than in most Islamic countries.

Women were given some freedom, including the right to vote.

Women were excluded from public life and could not go to school or hold a job.

Determine whether the following descriptions of the US-led effort in Afghanistan are true or false.✔ TrueFalseThe Taliban government could not withstand coalition airstrikes and fell quickly.

True

False

Why did President Bush list Iraq among the countries in the “axis of evil”?

He believed Iraq had directly ordered the 9/11 attacks on the United States.

He believed Iraq had helped Osama bin Laden organize the terrorist group al-Qaeda.

He believed Iraq had WMDs that Hussein might give to terrorists.

Why did the United States invade Iraq in 2003? Check all the boxes that apply.

Bush believed Saddam and Iraq had WMDs.

Bush argued that Iraq had previously supported terrorist organizations.

The United States claimed that Iraq was not fully cooperating with UN weapons inspectors.

The United States claimed Iraq had directly ordered the 9/11 attacks.

What challenges did the United States face in Iraq? Check all that apply.

The US had trouble gaining trust and establishing relationships with the people.

An anti-US insurgency fought against American forces.

WMDs were found throughout Iraq.

Two different groups of Iraqis fought against each other in a civil conflict.

Why was the war in Iraq controversial and at times unpopular? Check all that apply.

Some US allies, such as France and Germany, refused to support the war.

No WMDs were ever found in Iraq.

The war did not bring an end to Saddam’s leadership.

The war cost many thousands of lives and billions of dollars.

According to President Bush, what was “the surge”?

a decision to maintain the strategy he was using in the Iraq War

a process of reviewing the policies that governed Iraq

a dramatic policy shift, including reinforcements and a new mission

Write a short paragraph (3-4 sentences) that gives your opinion on the US decision to invade Iraq. You should describe whether you think this decision was correct. Provide evidence that supports your argument.

Answer:

The US decision to invade Iraq was largely based on the concern that the United States thought Hussein had WMDs. In the wake of the 9/11 attacks, the government changed how America would respond to such threats as Hussein by moving toward preemptive war. However, the decision proved controversial because no WMDs were ever found, and the conflict caused great hardship for many Iraqis. Therefore, the invasion remains a highly debated event in American foreign policy.

After the effects of the troop “surge” were felt in Iraq, President Bush

ordered a similar surge in Afghanistan.

ordered additional troops into Pakistan.

announced a plan for an immediate US withdrawal.

announced a plan for a gradual US withdrawal.

When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in this circuit?

The electric charges move from the energy source and are used up at the switch.

The electric charges move from the energy source and are used up at the buzzer.

The electric charges move from the buzzer through the energy source and back to the buzzer.

The electric charges move from the energy source through the buzzer and back to the energy source.

The Taliban later took control of some areas of the country, and violence continued in Afghanistan.

Answer not available

Which facts did you include in your response? Check all the boxes that apply.

The United States thought Hussein had WMDs.

9/11 changed how America would respond to such threats as Hussein.

The war caused great hardship for Iraqis.

No WMDs were ever found.

The new Iraqi democracy made the war worth fighting.

The invasion of Afghanistan by American troops

forced the Taliban to surrender Osama bin Laden.

caused the Taliban’s government to fall quickly.

failed due to UN forces supporting the Taliban.

suffered against the Taliban’s military forces.

Which would cause an electric circuit to lack a current?

open switch

closed switch

lighted bulbs

unlighted bulbs

After the Taliban fell, women were given the right to vote, and a democratic government was elected.

Answer not available

Which nation helped the United States invade Iraq in 2003?

Great Britain

Canada

Germany

France

Patty makes a table of the symbols used for the parts of an electric circuit.

Battery

Switch

Resistor

Bulb

During the US-led invasion of Afghanistan, Osama bin Laden

was killed by the American military.

was captured by coalition troops.

escaped to another country.

led Afghani military forces.

What symbol would best represent an electric fan speed controller in an electric circuit?

Option

Following the war in Iraq,

Saddam Hussein’s reign continued.

the country became more stable.

many warring factions made peace.

the nation elected a new government.

Jamal draws the circuit diagram shown.

one battery, two switches, two resistors

two batteries, three switches, two resistors

one battery, four switches, one resistor

two batteries, three switches, two resistors

As a result of the terrorist attacks on September 11, 2001,

approximately 1,000 people died.

the al-Qaeda terrorist group formed.

the US declared a “war on terror.”

US allies declared a “war on terror.”

How does a parallel circuit change when a branch is added?

The total resistance increases, so the current in the circuit decreases.

The total resistance decreases, so the current in the circuit increases.

The total resistance increases, so bulbs shine at a lower brightness.

The total resistance decreases, so bulbs shine at a higher brightness.

What tactic did Taliban fighters use to reassert control of some areas of Afghanistan?

air strikes

desert warfare

hijackings

suicide bombings

What is the main disadvantage of parallel circuits?

Any break in the circuit stops the flow of charges.

There are multiple paths for charges to flow.

If one bulb goes out, the other bulbs will go out.

They are complicated to design and build.

The plan known as the surge, included a new strategy to combat insurgency. The plan called for troops to

stay in their bases and fight the war from a distance.

leave their bases and take over the leadership of the Iraqi military.

leave their bases and work more closely with the Iraqi population.

stay in their bases and work more closely with the Iraqi population.

Which statement describes one feature of a closed circuit?

Charges do not flow.

Bulbs will not shine.

The circuit is broken.

The circuit is complete.

A positive result of the war in Iraq was that

it led to years of peace in the country.

it ended the regime of a brutal leader.

it led to immediate stability within Iraq.

it smoothed tensions between factions.

Chang wants to build a circuit that will light up a bulb from a flashlight, and has a battery, switch, wire, and a light bulb.Which component would Chang use as the source of energy?

the battery

the switch

the wire

the light bulb

Following the invasion, as the United States struggled to impose law and order in Iraq,

the Taliban began to regain control.

Arab groups supported US troops.

a violent insurgency fought US troops.

Hussein’s supporters returned to power.

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