Shadowing Practice: Invisible ink science experiment - Learn English Speaking with Video
Kies een oefenmodus
Elke modus opent een volledig scherm oefenruimte.
106 zinnen
Als zinnen te kort of te lang zijn, klik op Bewerken om ze aan te passen.
1
Has your kid ever wanted to be a spy or maybe write secret coded notes to their siblings or their friends?
2
Well, today I have an experiment for exactly that called secret friendship notes.
3
Hi everyone, I'm Emily Calandrelli, MIT engineer and host of Emily's Wonder Lab.
4
And on my channel, we learn about all things space and science.
5
So grab some turmeric because we are about to go on a mission.
6
Keep exploring.
7
And this sounds like.
8
Skate carrier.
9
And keep exploring.
10
Today for our secret friendship notes, we are going to draw a secret message with a baking soda solution, set it aside to dry,
11
and then once it's dry, we are going to reveal it with a turmeric solution.
12
Okay?
13
So for our baking soda solution, what you need is one cup of water plus one tablespoon of baking soda.
14
To draw your message, you'll want a few paintbrushes, and then later for your turmeric solution,
15
you want one half cup water with one teaspoon of turmeric.
16
And parents and adults, if you've worked with turmeric before, you know that it stains everything.
17
Fingers and counters and bowls and basically anything it touches.
18
So please exercise caution here.
19
It is why I have my tinfoil on the counter because I'm trying to save this counter from the turmeric.
20
So just be careful here.
21
So first, we are going to make our baking soda solution.
22
This is going to be our paint that we paint the secret message
23
that you're not going to be able to see after it dries.
24
So let's go ahead and do one cup of water.
25
Right in a bowl.
26
And now, let's add one tablespoon of baking soda.
27
Just like this.
28
And then go ahead and mix it up.
29
You'll notice that the baking soda won't completely dissolve in the water, and that's okay.
30
If you have a little bit of baking soda on the bottom, that's all right.
31
We're just trying to create as much of a baking soda solution as we can
32
because it's the baking soda that is the very key ingredient to our secret message here.
33
Once you've mixed that up about as good as you can, we're going to take our paintbrush and use this
34
and our baking soda solution to write our secret message on a piece of computer paper.
35
So I'm going to take one sheet of computer paper here,
36
set this aside and write my message here trying to get as much baking soda on your paintbrush as you can.
37
Tap it off.
38
You don't want it to be too wet.
39
Okay, now that I've written my secret message, I'm going to set it aside to dry.
40
It'll take between 10 minutes to an hour, really depending on how much water you use on your paper.
41
But if you want this message to be completely secret,
42
You want it to be completely dry because once it's completely dry because the baking soda is white
43
It's so hard to see this is the secret part of these secret friendship notes
44
So try to let it completely dry before you move on to the next step
45
Once your secret friendship note is dry
46
You can give it to a friend with the magic reveal paint and the magic reveal paint is our turmeric solution
47
So let's go ahead and make that we're going to do one half cup water there plus plus one teaspoon turmeric.
48
I'm using my one half teaspoon here because it fits in the turmeric because I'm just trying to avoid spills here.
49
One half teaspoon plus, plus one half teaspoon equals one teaspoon.
50
I'm gonna go ahead and mix this up.
51
Again, it'll be a little clumpy.
52
This is because turmeric is not soluble in water.
53
It's soluble in alcohol, but we're just gonna do our best here.
54
We just wanna suspend the turmeric in the water as best we can.
55
Now here's the fun part.
56
So we're going to take our turmeric solution
57
and with a big paintbrush you're going to tell your friend
58
that to reveal the secret message they just need to paint the paper with the magic reveal paint.
59
You just want to go ahead and paint the entire thing.
60
I'm going to take my secret message here and I'm just going to paint on top of it.
61
Because look at this.
62
It's very hard to see what this says.
63
Right?
64
What is my secret note saying?
65
I don't know.
66
Let's reveal it.
67
Here we go.
68
Look at that.
69
Look at the turmeric reacting with our baking soda here.
70
Do you see what's happening?
71
Look at this.
72
Everywhere that our turmeric is touching the paper, it's yellow, kind of what you would expect, like the color of turmeric.
73
But when it touches the part where we had baking soda, do you see the color it turned?
74
It turns red.
75
Why does that happen?
76
Well, it's because turmeric is something known as a natural pH indicator.
77
which means it changes colors when it's in the presence of an acid and a base.
78
What is baking soda?
79
Well, it's sodium bicarbonate or a base.
80
And so when turmeric interacts with baking soda, it turns red.
81
It goes from yellow to red to indicate that it is in the presence of a base.
82
Here's a trick to make your secret note even more secretive use cardstock
83
because cardstock doesn't absorb the water as much so you don't have those obvious ripples in the paper.
84
It takes a little longer for the water to dry but once it does it's even harder to see your message.
85
So let's go ahead and reveal this one.
86
Get my turmeric secret reveal paint on my paintbrush.
87
Watch with each brush stroke I'm revealing a part of my secret message.
88
You see what it says here?
89
It says, Stay curious and keep exploring.
90
You send your friend this message, but they have no idea what it says.
91
You tell them to reveal it with your magic turmeric paint.
92
Let's see.
93
You see what it says?
94
Meat in the treehouse.
95
Home.
96
And the best part is that your secret friendship note smells amazing.
97
Very spicy.
98
Smells great.
99
Thank you for making secret friendship notes with me.
100
If you like this one, be sure to check out my bestselling
101
Stay Curious and Keep Exploring book series for 99 more science experiments.
102
I'm Emily Calandrelli.
103
Subscribe for all things science and space.
104
And remember, stay curious and keep exploring.
105
I'll see you next time.
106
Emily's Science Lab
App downloaden
Alles wat je nodig hebt om vloeiend te spreken
AI UitspraakScoor elke zin
IPA OefeningBeheers elk geluid
WoordenschatBouw je woordenschat op
WoordenspelLeren terwijl je speelt
FOR YOU
Aanbevolen Video
A21
180 zinnen
Real life NATURAL English to Practice With Your Child 🍂
KidsDaily ConversationWorking Adults
A21
113 zinnen
The UFO Mystery | Home Safety Rules for Kids | Police Cartoon | Sheriff Labrador
KidsDaily Conversation
B129
13 zinnen
We Tried 4 Alternatives to Mentos in Cola… Which One Works Best?
KidsDaily Conversation
A22
40 zinnen
Shadow | Science for Kids
KidsDaily Conversation
A23
31 zinnen
unit 6 grade 6 spelling #animation
KidsDaily Conversation
A23
62 zinnen
Why Does Cooking Eggs Make Them Hard? | The Science of Cooking | SciShow Kids
KidsDaily Conversation
A24
20 zinnen
The Secret Ingredient
KidsTeensDaily Conversation
A21
20 zinnen
EASY SCIENCE EXPERIMENTS TO DO AT HOME
KidsDaily Conversation
A22
159 zinnen
Vlog 💦: Henry's Classroom Prank Went WRONG... THEN He FREAKED OUT! 😱🍫 | Slow English (A2)
KidsDaily Conversation
A21
25 zinnen
How to Bake a Cake Kids' Style
KidsDaily Conversation
A26
117 zinnen
FLYERS 2 TEST 2 PART 4
KidsDaily Conversation
B15
218 zinnen
Revealing 5 Secret Magic Tricks With Science
KidsDaily Conversation
Woordenschat en spreektips bij deze les
Deze spreekles is gebaseerd op de video “Invisible ink science experiment”. Deze woorden komen het vaakst terug: secret, turmeric, baking, soda, message. Deze video bevat 106 zinnen en 1095 woorden om na te spreken. Het gesproken deel duurt 7:15. De spreker praat in een natuurlijk tempo van ongeveer 151 woorden per minuut, dicht bij een alledaags gesprek. 83% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden; de rest kun je beter vooraf bekijken.
Belangrijke woorden in deze video
15 woorden uit de video die het leren waard zijn, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| soda zelfstandig naamwoord | /ˈsoʊdə/ | natriumcarbonaat |
| bake werkwoord | /beɪk/ | bakken |
| reveal werkwoord | /ɹɪˈviːl/ | onthullen, zich ontpoppen |
| friendship zelfstandig naamwoord | /ˈfɹɛn(d)ʃɪp/ | vriendschap |
| explore werkwoord | /ɪkˈsploɹ/ | onderzoeken, bestuderen |
| curious bijvoeglijk naamwoord | /ˈkjʊɹ.i.əs/ | nieuwsgierig |
| experiment zelfstandig naamwoord | /ɪkˈspɛɹ.ə.mənt/ | experiment, proef |
| finger zelfstandig naamwoord | /ˈfɪŋɡɚ/ | vinger |
| acid zelfstandig naamwoord | /ˈæsɪd/ | zuur |
| sheet zelfstandig naamwoord | /ʃit/ | blad |
| indicate werkwoord | /ˈɪndɪˌkeɪt/ | aanwijzen, aanduiden |
| carrier zelfstandig naamwoord | /ˈkæɹi.ɚ/ | drager |
| brush zelfstandig naamwoord | /bɹʌʃ/ | borstel, (paint-) verfborstel |
| depend werkwoord | /dɪˈpɛnd/ | afhangen |
| react werkwoord | /ɹiːˈækt/ | reageren |
Phrasal verbs die je zult horen
| Woord | Betekenis |
|---|---|
| check out werkwoord | onderzoeken |
Zinnen om te herhalen
Korte, volledige zinnen uit de video die je in alledaagse gesprekken kunt gebruiken:
- You don't want it to be too wet.
- What is my secret note saying?
- Do you see what's happening?
- You see what it says here?
- You see what it says?
Grammatica in deze video
De structuren die de spreker het meest gebruikt, met de exacte woorden uit de video:
| Structuur | In de video |
|---|---|
| Present perfect have/has + voltooid deelwoord — iets uit het verleden dat nu nog telt | you've worked · I've written |
| Werkwoord + -ing enjoy, keep, stop… + -ing — werkwoorden die door de -ing-vorm worden gevolgd | Keep exploring |
| Overtreffende trap the -est / the most … — het hoogste of laagste van een groep | our best · the best |
| Toekomst met “going to” be going to + werkwoord — een plan of iets dat je ziet aankomen | are going to draw · are going to reveal · are going to make |
Uitspraak om op te letten
De spreker gebruikt 34 samentrekkingen en verkorte vormen, zoals I'm, we're, don't. Spreek ze kort uit, zoals je ze hoort.
- De klanken “sh” en “zh”: friendship /ˈfɹɛn(d)ʃɪp/, sheet /ʃit/, brush /bɹʌʃ/, caution /ˈkɔːʃ(ə)n/, paintbrush /ˈpeɪntˌbɹʌʃ/
- Lange woorden — let op de klemtoon: experiment /ɪkˈspɛɹ.ə.mənt/, indicator /ˈɪn.dɪˌkeɪ.tə(ɹ)/, ingredient /ɪnˈɡɹiːdi.ənt/, bicarbonate /baɪˈkɑɹ.bə.neɪt/
Klanken die Nederlandstaligen lastig vinden:
- Stemhebbende eindmedeklinker — /b/, /d/, /g/, /z/, /v/ niet verscherpen: acid /ˈæsɪd/, depend /dɪˈpɛnd/, subscribe /səbˈskɹaɪb/, absorb /æbˈsɔɹb/, suspend /səsˈpɛnd/
- /æ/ — opener dan de Nederlandse “e”: acid /ˈæsɪd/, carrier /ˈkæɹi.ɚ/, react /ɹiːˈækt/, interact /ɪn.təˈɹækt/, absorb /æbˈsɔɹb/
- /g/ — een harde plofklank, geen Nederlandse “g”: finger /ˈfɪŋɡɚ/, ingredient /ɪnˈɡɹiːdi.ənt/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Begin op 0,75× snelheid, spreek zin voor zin na en ga terug naar normale snelheid zodra het makkelijk gaat.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als soda, bake, reveal.
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.