Grammar
Gdybym miał więcej czasu, chodziłbym na basen dwa razy w tygodniu. Niestety w tym semestrze mam za dużo zajęć.
[If I had more time, I would go to the swimming pool twice a week. Unfortunately, I have too many classes this semester.]
A scientific test carried out to check an idea is called an ___. Scientists usually repeat it several times to make sure the result is reliable.
experiment
Please ___ ___ your safety glasses before you enter the lab. Nobody is allowed in without them.
put on
W laboratorium nie wolno jeść ani pić, ale można zostawić plecak w szafce. Każdy musi nosić fartuch.
[You mustn’t eat or drink in the lab, but you can leave your backpack in a locker. Everyone has to wear a lab coat.]
I'm a metal that successfully blocks gamma radiation; many containers are built so that it is safe to store radioactive materials.
lead
Mój brat wygrał konkurs, co zaskoczyło całą rodzinę. Nikt nie wierzył, że w ogóle weźmie w nim udział.
[My brother won the competition, which surprised the whole family. Nobody believed that he would even take part in it.]
A material that does not let heat or electricity pass through easily is called an ___. Plastic and rubber are good examples.
insulator
The engine ___ ___ in the middle of the test, and the whole experiment had to stop. We had to wait two hours for a mechanic.
broke down
Światło w laboratorium wciąż się pali, więc ktoś na pewno jeszcze tam pracuje. To może być profesor albo doktorant.
[The light in the lab is still on, so someone must still be working there. It could be the professor or a PhD student.]
I store chemical energy and turn it into electricity when you connect me to a device.
battery
Nie pamiętam, żebym zamykał drzwi na klucz. Zapomniałem wziąć kluczy, więc musiałem czekać na sąsiada.
[I don’t remember locking the door. I forgot to take my keys, so I had to wait for the neighbour.]
Energy that comes from sources that are naturally replaced, such as the sun, wind and water, is called ___ energy. Unlike coal or oil, it will never run out.
renewable
The first hypothesis ___ ___ to be wrong. The team had to go back to the beginning and design a new experiment.
turned out
Powinniście byli założyć okulary ochronne przed wejściem. Mogło dojść do poważnego wypadku.
[You should have put on safety glasses before entering. A serious accident could have happened.]
I’m a type of invisible radiation that passes through soft tissue but is stopped by bones. Doctors use me to look for broken bones, and airport staff use me to check your luggage.
X-ray
Tak głośna była muzyka, że nikt nie usłyszał dzwonka. Dopiero gdy ktoś otworzył drzwi, zorientowaliśmy się, że przyszli goście.
[So loud was the music that nobody heard the doorbell. Only when someone opened the door did we realise that guests had arrived.]
Anything that can cause harm, such as a toxic chemical, a high voltage or radiation, is called a ___. Every laboratory must display warning signs next to each one.
hazard
Before they publish the results, the scientists want to ___ ___ the possibility of contamination. If the samples were dirty, the whole study would be worthless.
rule out
Przyrząd nie mógł się zepsuć, bo wczoraj go kalibrowano. Ktoś musiał zmienić ustawienia albo kabel mógł się poluzować.
[The instrument can’t have broken down, because it was calibrated yesterday. Someone must have changed the settings, or the cable may have come loose.]
I’m a measure of disorder in a system, and in an isolated system I never decrease. I’m the reason why heat flows from hot objects to cold ones and why a broken cup never repairs itself.
entropy
Gdy w grudniu skończy remont, będzie remontował ten dom już od dwóch lat. Przyznał, że żałuje, że w ogóle go kupił.
[By the time he finishes the renovation in December, he will have been renovating the house for two years. He admitted that he wished he had never bought it.]
The risk from this source is so small that it can be regarded as ___. Nevertheless, the safety rules still require everyone to follow the procedure.
negligible
If we don’t ___ ___ ___ energy use soon, the bills will become unbearable. Many factories have already managed to ___ ___ their consumption by a third.
cut down on
bring down
Nie musiałeś powtarzać całego pomiaru, bo pierwszy wynik był dobry. Mogłeś przynajmniej zapytać mnie o zdanie.
[You needn’t have repeated the whole measurement, because the first result was fine. You could at least have asked for my opinion.]
I’m the boundary around a black hole beyond which nothing, not even light, can escape. Once an object crosses me, it can never come back.
event horizon