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Science Junior High

1の(2)です 答えがアになる理由が分かりません、チョーク側から光が差し込んでくるのはなぜですか?作図も合わせて解説していただけたらありがたいです🙇🏻‍♀️

1 身近な物理現象 1 光の性質 透明な物質中での光の進み方について調べた。 次の(1)~(3) に答えなさい。 (1) 図1のように, 水中に光源を置き、水面に向けて光を当てた。 水面と光の進む向きのつ くる角度が30℃のとき, 屈折する光は観察されなかった。 このことについて説明した次の 文中の① には数値を,②には最も適当な ことばを書け。 (1) 図1において屈折する光はなく、反射角①で反射する光だけが観察された。 この現 象を② という。 (2) 図2のように, 実験台上に直方体の透明なガラスを置き, その後ろにチョークを立てた。 図3 図3は図2を真上から見たときの位置関係を示している。 図3の点Pの位置からガラスを 通してチョークを観察すると、どのように見えるか。 次のアーエから1つ選び、その記号 を書け。 ア イ ウ エ 2 (3) 図4のように, 半円形レンズの半円の中心方向へ光を入射した。 光がレンズ中を進み、 境界面で屈折し空気中へ出ていく道筋を図4に実線でかき入れよ。 図4に記入 ウ F 図2 ガラス 2 凸レンズによってできる像 右の図のように, 凸レンズを光学台に固定し, 物体Aとスクリーンを光学台の 上で動かすことができるようにしておく。 物体Aと凸レンズの距離をa, 凸レン ズとスクリーンの距離をbとする。 図において, aとbがともに20.0cmになる 光学台 I ようにして物体Aとスクリーンを置いたとき、 スクリーンに物体Aと同じ大きさ の実像ができた。 次の(1), (2) に答えなさい。 (1) 実験で用いた凸レンズの焦点距離は何cmか。 ガラスー 物体A 凸レンズ 30 光 a <鹿児島〉 チョーク 半円の中心 木 チョーク 実験台 点P 境界面 スクリーン (2) 次のア~エのうち, スクリーンにできる物体Aの実像が最も大きくなるときのaとして,適当なものを1つ選び, その記号を書け。 cm. ア 35.0cm イ 25.0cm ウ 15.0cm エ 5.0cm 3 音の性質 太郎さんは, おんさの音を, マイクロホンを使ってコンピュータに入力し、 音の大小と高低 について調べた。 最初に, おんさを鳴らして調べたところ, コンピュータの画面には、 右の図 WWA のように表示された。 画面の左右方向は時間経過を表し, 上下方向は振動のはばを表している。 次の(1), (2) に答えなさい。 (1) 最初に調べたおんさを, 最初よりも大きな音で鳴らしたとき, コンピュータの画面はどのように表示されるか。 次のア~エから最も適切なものを1つ選び, 記号で書け。 ただし, アーエの画面の日盛りのとり方は, 上の図とすべて同じである。 ア イ I ▬▬▬▬▬||||| <岐阜> TALY 12 - ALAT htioitat CATATAVINTON WW EIXEINA VAL ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ H ▬▬▬▬ (2) 最初に調べたおんさより高い音が出るおんさを 最初と同じ大きさの音で鳴らしたとき, コンピュータの画面は どのように表示されるか。 (1) のア~エから最も適切なものを1つ選び,記号で書け。 ただし, アーエの 画面の目盛りのとり方は,上の図とすべて同じである。 1

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English Junior High

あ に入るのは、until か withoutのどちらですか? 解説もありでお願いします!

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( 1) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go ). Jane: Risa: Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. Jane: * I'm getting less scared, Risa. Thank you very much. Risa: You know, Jane, "Don't be scared; be prepared."! woken wakeの過去分詞 definitely 確かに in a while しばらく be used to ・・・・・・に慣れている right after その後すぐに priority safety hide En

Waiting for Answers Answers: 0
English Junior High

あ に入るのは、until か withoutのどちらですか? 解説もありでお願いします!

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( 1) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go ). Jane: Risa: Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. Jane: * I'm getting less scared, Risa. Thank you very much. Risa: You know, Jane, "Don't be scared; be prepared."! woken wakeの過去分詞 definitely 確かに in a while しばらく be used to ・・・・・・に慣れている right after その後すぐに priority safety hide En

Waiting for Answers Answers: 0
English Junior High

あ に入るのは、until か withoutのどちらですか? 解説もありでお願いします!

Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: Jane: Risa: I was woken up by the earthquake this morning, and couldn't go back to sleep after that. Nothing fell on the floor or was damaged, but definitely it was a big one! I was scared! Yeah, it woke me up, too. I haven't felt one like that in a while, but I think I was too used to those shakings. I went to sleep right after. Weren't you scared, Risa? Yes, but just a little. I think I'm afraid of a really big one, like the one in Tohoku in 2011, anyway. You know, you can't be just scared ( ) preparing for disasters, Jane. Do you know what to do in an earthquake? There are almost no earthquakes in your country, right? No, I haven't experienced one in the U.K. Can you tell me what to do? Sure. The first priority is your safety. Hide under a desk or table to protect your head. Stay there until the earthquake stops. Then be prepared to move to a safer place. I'm sure we'll do some simulations in the evacuation drill held at school next Monday. We'll learn there what's important to do during an earthquake. Wow! That sounds great. I'm looking ( ) the drill now. Maybe we can get "Moriyama-ku Evacuation Map" after the drill. It shows you (in, where, should, you, a disaster, go). い Oh, I'm glad to know that. You should make an emergency kit, too. Our family has made one each and put them near their bed. I see. Can you tell me how I should make it? Well, I'll send you an email later then. z I'm getting less scared, Risa. Thank you very much. You know, Jane, " Don't be scared; be prepared."! woken wake の過去分詞 right after その後すぐに definitely 確かに in a while しばらく be used to ・・・・・に慣れている priority safety hiden332

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