假如你是Greenhill School的交換生，你參與了該校的一個科學(xué)實驗。請根據(jù)以下實驗過程補(bǔ)全英文實驗報告。

Water in Motion

What You Need:

•clear glass tray

•warm water

•large cup with 200 ml of hot water

•large cup with 200 ml of cold water

•red and blue liqpid food coloring

Directions :

① Fill the tray with warm water.

② Set the tray on top of the two cups, with the hot cup under one end and the cold cup under the other.

③ Add four drops of red food coloring to the water above the hot cup and four drops of blue food coloring to the water above the cold cup. Add both colors at the same time.

Results :

Color

Water

Observations

blue

cold

sinks and stays together; moves slowly toward hot side in a band of color; spreads out over the hot cup

red

hot

spreads quickly across the top;

covers whole top in 1～2 minutes,then starts to sink

Hello, everybody. Here is our report on the experiment “1.”. First, we put the glass tray full of warm water on top of two cups with 200 ml of2.water and cold water. Then, we add red and blue liquid food colorings into the water above the hot and cold cups. at the same time.

After careful observations, we got the3.. The blue food liquid coloring moves downward first and then to the hot side while the 4.one spreads quickly and covers whole top in a short time and goes down; the blue liquid food coloring spreads more5.than the red one. Thank you for listening.

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：四川省成都外國語學(xué)校2018-2019學(xué)年七年級上學(xué)期期中考試英語試卷 題型：單選題

– Look at _____. What am _____?

– ______ are a policeman.

A. I; me; You B. me; I; Your C. me; I; You

查看答案和解析>>

科目：初中英語 來源：人教版2018年秋八年級英語上冊Unit 6 I m going to study computer science單元達(dá)標(biāo)測試卷 題型：單選題

—I don’t know your e-mail address. Could you please __________ here?

—Sure.

A. write down it B. write it down

C. take it up D. take up it

查看答案和解析>>

科目：初中英語 來源：江蘇省鹽城市2019屆九年級上學(xué)期期中抽測英語試卷 題型：單選題

–I’m afraid I may fail in the coming English exam.

– . We still have one week to prepare for it.

A. That’s not the case B. Don’t lose heart

C. That’s too bad D. Don’t forget it

查看答案和解析>>

科目：初中英語 來源：江蘇省鹽城市2019屆九年級上學(xué)期期中抽測英語試卷 題型：單選題

_____, my brother passed the exam.

A. To my great surprising B. To my great surprise

C. With my joy D. With my surprise

查看答案和解析>>

科目：初中英語 來源：浙江省臺州市2018年中考英語試卷 題型：閱讀單選

My parents run a small store in San Francisco, They always keep a big box by the entrance where people can donate(捐贈) something to our local food bank.

“For some reason, our food-donation box just isn’t filling up recently,” said my dad.

“Maybe it’s time to think of a way to remind people about the food bank,” said my mom.

“What about a talent show?”rny dad suggested.

“OK,______” said my mom.

So while my parents posted information online, we kids made some signs. My friend Mareya came over to help out.

“I’d like to do an act in the show, but I don’t know what to do,” I told Mareya.

“Well , since the food-bank thing is about sharing,” said Mareya, “why not write a song about that?”

“Writing a song is not a problem,” I said. “But it’s hard for me to sing it alone!”

She said. “What if we sang it together?”

Since Mareya has the world’s prettiest voice and also happens to play the guitar, I agreed.

Mareya and I practiced and practiced, and I was feeling pretty good about our act. But the morning of the performance, Mareya called that she had a stomachache and was not in any shape to perform.

“There’s no way I’m going on without you,” I told her.

“You’ve worked so hard,” she said. “You’ll be great!”

But great is the last word anyone would choose to describe my performance! Without Mareya’s guitar and voice to guide me, my song was completely in a mess. And I even forgot half the words.

Remember the sick, heart-racing, hot-faced feeling I was talking about? Well, that’s what I was experiencing—more than I ever had before.

Once I was off the steps, my mom gave me a big hug.

“I want to disappear! I’ve never been so embarrassed(尷尬的) in my life,” I said.

Ollie smiled. “I think you are really brave.”

Indi added, “I now know that you truly can survive(幸存) a lot more embarrassment than you think.”

1.The family decided to have a talent show because ______________.

A. they wanted to show thanks to donators

B. they would like to make the neighborhood happy

C. they planned to run a bigger store in San Francisco

D. they hoped more people could care about the food bank

2.Which of the following is the best to fill in “ ______” in the passage?

A. but there is no way. B. what if we do it alone?

C. let’s get the words out. D. why not sing a song?

3.The changing of the writer’s feelings to the performance can be described as .

A. embarrassed→ encouraged→ nervous→ confident

B. confident→ nervous→ embarrassed→ encouraged

C. nervous→ embarrassed→ confident→ encourag.ed

D. encouraged→ confident→ embarrassed →nervous

4.What will most probably happen in the following part of the passage?

A. More people came to know about the food bank.

B. Mareya came and continued the performance.

C. Fewer people donated because of the performance.

D. Andi and Mareya went to other places for donation.

查看答案和解析>>

科目：初中英語 來源：河北省秦皇島市盧龍縣2019屆九年級上學(xué)期期中考試英語試卷 題型：閱讀單選

Sometimes I really doubt whether there is love between my parents. Every day they are very busy trying to make money for my schooling.

One day, my mother was sewing a quilt（縫被子）. I silently sat beside her.

“Mum, is there love between you and Dad?” I asked in a very low voice.

With surprise in her eyes, she stopped her work for a while. The she said, “Susan, look at this thread（線）. It can hardly be seen, but it’s really there. It makes the quilt strong. If life is a quilt, love should be a thread. Love is inside.”

I couldn’t understand her until the next spring. At that time, my father suddenly got sick seriously. My mother had to stay with him in the hospital for a month.

After they were back, may mother helped my father walk slowly on the country road every day. They were so kind to each other and it seemed they were the happiest couple.

After two months my father still couldn’t walk by himself.

“Dad, how are you feeling now?” I asked him one day.

“Susan, don’t worry about me.” he said. “I just like walking with your mum. I like this kind of life.” Reading his eyes, I knew he loves my mother deeply.

Now I understand that love is just a thread in the quilt of our life. Love is inside, making life strong and warm.

1.Why are Susan’s parents busy trying to make money?

A. To send Susan to school

B. To get to see the doctor

C. To buy a strong quilt

D. To show their love

2.Susan’ father stayed in hospital for ______.

A. one day B. one month C. two months D. three months

3.Susan came to understand her mother ______.

A. while her mother was sewing a quilt

B. before her father was in hospital

C. when she was sitting beside her mother

D. after her father was seriously sick

4.What can we know from the passage?

A. Susan’s father is very lazy

B. Susan’s mother is a nurse

C. Susan’s parents love each other

D. Susan doesn’t like her father

5.Which of the following could be the best title for the passage?

A. How to make a Quilt Strong

B. Love is just a Tread

C. Walking on the Country Road

D. A Seriously Sick Father

查看答案和解析>>

科目：初中英語 來源：人教版英語九年級全冊練習(xí)題：Unit 8 It must belong to Carla8 Self Check 題型：完型填空

Tony and his friends found a strange old box filled with candies and a treasure map.They thought they _____ have belonged to Stickybeard，a famous candy?loving pirate(海盜) who _____ a lot of treasure in a secret place.They were very _____ and started to look for the treasure.

They _____ the map and found another small box.In the box，they found a few candies，the letter L and another _____．The new map led them to a big tree where they found another box with some candies，a new map and a big letter O．They went on and found another _____ boxes with the letters V and E．However，on the last map they found was a puzzle(智力測驗)．

They spent a long time arguing about the meaning of the puzzle._____，Alex，one of Tony's friends，found the answer.“The puzzle wants us to put the letters we have _____ beside our father and mother.” He added，“_____ the answer to the puzzle is ‘love your parents’．”

The great treasure Stickybeard or someone else left was a great piece of ______—love your parents.From then on，Tony and his friends loved their parents more than ever.

1.A. might B. would C. can't D. mustn't

2.A. made B. took C. hid D. bought

3.A. tired B. sad C. excited D. nervous

4.A. found B. read C. drew D. forgot

5.A. box B. tree C. letter D. map

6.A. two B. three C. four D. five

7.A. Recently B. Usually C. Probably D. Finally

8.A. written B. created C. collected D. chosen

9.A. If B. So C. Or D. But

10.A. paper B. advice C. land D. news

查看答案和解析>>

科目：初中英語 來源：廣東省江門市2018-2019學(xué)年八年級10月月考英語試卷 題型：完型填空

Sara started playing football when she was six. She became interested in_______ when she first came to the football field.

“I enjoy football because it helps me to be _______ ,” says Sara. She knows that if she wants to stay healthy, she _______watch TV at home all day.

Football is Sara’s favourite sport now. She has many friends in her football _______. Sara loves to pass the ball to her friends and_________them to score. But her favourite thing is to score herself._______ the ball comes to her, she kicks it hard _______ tries to score.

Sara also tries _______sports, like swimming, tennis and basketball. However, she likes football best. She is going to get a net behind her house so that she can practise playing football_______ .

Sara is very good at her school________, too. “I need to work hard. I hope to get better marks in all my subjects,” says Sara.

1.A. it B. him C. her D. you

2.A. small B. weak C. strong D. easy

3.A. can B. need C. can’t D. needn’t

4.A. family B. team C. bag D. book

5.A. stop B. pick C. shake D. help

6.A. Because B. Before C. When D. Since

7.A. but B. and C. so D. or

8.A. other B. another C. others D. the others

9.A. near her house B. at school C. on the road D. in the gym

10.A. music B. sport C. life D. work

查看答案和解析>>

同步練習(xí)冊答案