精英家教网 > 初中地理 > 题目详情

【题目】关于物体的内能,下列说法不正确的是( )

A. 烧开的水有内能。 B. 在草地上滚动的足球有内能。

C. 物体的温度升高时,内能会增大。 D. 水结冰时温度不变,所以内能不变。

【答案】D

【解析】

试题分析: A. 一切物体都有内能,因此烧开的水有内能;在草地上滚动的足球有内能,AB正确;

C. 物体的温度升高时,分子运动越激烈,动能越大,因此内能会增大,C正确; D. 水结冰时温度不变,当继续放热,因此内能减小,不是不变,D错误。

练习册系列答案
相关习题

科目:初中地理 来源: 题型:

【题目】I have an _________ book. Lets read(阅读) it now.

A. good B. fun C. boring D. interesting

查看答案和解析>>

科目:初中地理 来源: 题型:

【题目】 补全对话 阅读对话,从每题A、B、C、D四个选项中,选出一个最佳答案完成对话。(5分)

Rick: Hello, Rick speaking.

Judy: Hi, Rick. ____1____ You called me this morning, right?

Rick: Oh, Yes. I called you at about nine, but you didnt answer.[

Judy: ____2____ I bought something for my trip to Guilin.

Rick: Are you going to Guilin? Its a beautiful city in China.

Judy: Yes. ____3____

Rick: Well, Ill have a party on Friday evening. Would you like to come?

Judy: ____4____ My plane will take off at 6:00 p.m. on Friday.

Rick: Its a pity that you cant come! ____5____

Judy: Thank you very much. Bye!

Rick: Bye!

1. A. This is Judy. B. Lets go home.

C. Hes talking. D. Glad to see you.

2. A. Math is too hard for me. B. They cant use the computer.

C. I was shopping at that time. D. Well go to the supermarket.

3. A. Have you been there before? B. Why did you call me?

C. Do you know Toms birthday? D. Why not go with me?

4. A. No problem. B. I disagree.

C. Im afraid not. D. Id love to.

5. A. See you at my party. B. Its very boring.

C. Lets meet at eleven. D. Have a good trip!

查看答案和解析>>

科目:初中地理 来源: 题型:

【题目】—Why do you want to stay at home?

—Because I __________ good when I am with my family.

A. smelt B. feel C. taste D. sound

查看答案和解析>>

科目:初中地理 来源: 题型:

【题目】 Parents should encourage teenagers to do social work for their __________ /k'mju:nt/.

A. celebration B. community C. chopstick D. chemistry

查看答案和解析>>

科目:初中地理 来源: 题型:

【题目】南极是世界上最冷的地方,常年平均气温是-25℃,一天企鹅妈妈与小企鹅之间发生了一次有趣的对话,它们的部分说法如下,其中正确的是( )

A. 小企鹅:妈妈,这么冷,我都没温度了。

B. 企鹅妈妈:不对,是没有内能。

C. 小企鹅:冰天雪地的,可能连水蒸气都没有吧。

D. 企鹅妈妈:呵呵,水蒸气倒肯定有,因为冰是可以升华的呀。

查看答案和解析>>

科目:初中地理 来源: 题型:

【题目】David and his brother Greg don’t go to school(上学) in the morning. They go to school after lunch, at one o’clock. They have math at 1:15. David likes math because it’s interesting. Greg doesn’t like math. David and Greg have PE after math. They like the teacher, Mr. Wright, and they like PE because it’s fun. But Greg’s favorite subject is Spanish(西班牙语) and David’s favorite is music. He plays the piano( 钢琴) and the violin(小提琴).

1David and Greg go to school ______.

A. in the morning B. in the afternoon C. in the evening

2______ like (or likes) math.

A. David B. Greg C. David and Greg

3What time do they have math?

A. After science B. At 1:15. C. At 1:50.

4Which of the following(下列哪个)is NOT right(正确的 )?

A. David and Greg have PE after math.

B. David and Greg like PE.

C. Greg doesn’t like Spanish.

5______ plays the piano.

A. David B. Greg C. David and Greg

查看答案和解析>>

科目:初中地理 来源: 题型:

【题目】在实验室测定空气中氧气的含量实验,能否用硫代替红磷?为什么?

________________________________________________________________________

查看答案和解析>>

科目:初中地理 来源: 题型:

【题目】下列物质投入足量的稀盐酸中,充分振荡,能得到溶液的是( )

A.木炭粉 B.铜粉

C.大理石粉 D.银粉

查看答案和解析>>

同步练习册答案