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「火星15号」

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家庭教師のLNSです!

 

 

日に日にその技術的能力を進歩させ、ついには大陸間弾

道ミサイルICMBまで完成したと伝わる北朝鮮。本日は

その件に関するリーディング問題です。

 

 

 

 

 

*著作権宣言:本著作物はアメリカ合衆国のラジオ局

NPR( National Public Radio ) の著作物で有り、

家庭教師のLNS(以下英文においても同様にLNSという。)

は本著作者のパートナーでも無ければ本著作物をプロモー

ション目的でここに記すものでは御座いません。

 

 

 

*Disclaimer

 

In Home Teaching Agency LNS Inc. is not a licencee nor

a partner of NPR. NPR‘s product in this section is for the

purpose of our use to write our this blog only.

 

 

 

——————————————————————————————–

 

 

 

Now,  read the below article and answer the questions at the bottom.

 

 

 The intercontinental ballistic missile that North Korea launched on

Wednesday appears to be significantly larger and more powerful

than previous versions, according to independent analysts.

 

 

 “It’s a monster,” says Vipin Narang, an associate professor at MIT

who tracks the North’s nuclear capabilities. The missile is so much

larger than previous versions that Narang suspects it could carry a

powerful thermonuclear weapon, regardless of whether the North

has managed to make a compact, missile-friendly version.

 

 

“They wouldn’t have to miniaturize much,” Narang says.

 

 

Other analysts are less sure about what the missile could carry

and where it could reach. David Wright, a rocket expert at the

 Union of Concerned Scientists, says the devil remains in the details

surrounding the rocket’s engines and the weight of the warhead it

carries. Still, he believes that this missile gives the North Koreans the

ability to deliver a nuclear warhead to U.S. soil. “I think at this point

they could,” he says.

 

 

 Earlier this year, the North tested a massive nuclear weapon with a yield

of 100-600 kilotons — roughly 7 to 40 times the power of the bomb

dropped on Hiroshima, Japan. The size and weight of that device is

unknown, but there were reports in August that the U.S. Defense

Intelligence Agency believed North Korea has had success miniaturizing

some of its lower-yield nuclear weapons.

 

 

 The new ICBM was launched early Wednesday local time. It shot up to

an altitude of 4,000 kilometers and flew for 53 minutes before plunging

into the Sea of Japan. After the launch, North Korean media declared

the nation had successfully tested a new “Hwasong-15” ICBM.

 

 

 Based on the height and duration of Wednesday’s flight, Wright believes

the Hwasong-15 could travel 13,000 kilometers. That would put all of the

continental U.S. within range. He cautions that the weight of a real

warhead could cause the missile’s range to shrink considerably — but

even by his most conservative estimate, the missile could hit cities along

the U.S. West Coast.

 

 

 The North has been known to give new names to missiles that have only

minor modifications, but in this case “the rocket is clearly something

new,” Markus Schiller, an aerospace engineer with the German company

ST Analytics, said in an email.

 

 

 The North previously conducted two tests of an ICBM called the

Hwasong-14 in July. In addition to appearing to be far larger than that

missile, the Hwasong-15 also looks like it has more powerful engines,

Schiller says. He also believes the North has learned how to “gimbal”

the thrust chambers on the bottom of the engine — an advanced way to

steer the missile that North Korea has never used before.

 

 

 Schiller says he believes the missile could accommodate a payload of 2

metric tons or even more.

 

 

 The missile’s nose is so large that Narang believes it might even be able

to hold decoys that could fool U.S. missile defenses.

 

 

 Even with these advances, many questions remain about the North’s

missiles and nukes. It’s unclear whether the country has perfected re-

entry technology that would allow a warhead to survive the final leg of

its journey toward its target. Nor is it known how the North’s nuclear

weapons would tolerate the stresses of being launched aboard a rocket.

 

 

 But Narang says this new missile unambiguously puts the U.S. within

range. And given what’s known about the rest of North Korea’s

weapons program, he says, it’s better to err on the side of caution.

 

 

 He says, “We have to assume that this thing can park a warhead on the

Eastern Seaboard.”

 

 

———————————————————————————————-

 

 

 

Question 1: What did Mr. Narang say North Koread does not need to

                       do anymore? 

 

 

 

Question 2: According to Mr. David Wright, what is North Korea

                       capabble of doing now in the fourth paragraph?

 

 

 

Question 3: What could the new missile’s large nose do to the U.S?

 

 

 

Question 4: What does the missile’s re-entry technology make

                       happen?

 

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