1. Heat pumps are used for ______.

a) cooking and cleaning (Kochen und Putzen)

b) heating and cooling (Heizen und Kühlen)

2. They work by transferring ______ from one place to another.

a) air (Luft)

b) heat (Wärme)

3. Heat pumps are very ______.

a) noisy (laut)

b) energy-efficient (energieeffizient)

4. They use electricity to ______ heat, not create it.

a) move (bewegen)

b) create (erzeugen)

5. You can use heat pumps for ______.

a) homes and offices (Wohnhäuser und Büros)

b) factories only (nur Fabriken)

6. Heat pumps work well in ______.

a) summer only (nur im Sommer)

b) all seasons (alle Jahreszeiten)

7. In summer, they ______ your space.

a) heat (heizen)

b) cool (kühlen)

8. In winter, they provide ______.

a) warmth (Wärme)

b) ventilation (Belüftung)

9. Heat pumps are ______ than many traditional systems.

a) noisier (lauter)

b) quieter (leiser)

10. They are good for the ______.

a) environment (Umwelt)

b) economy (Wirtschaft)

11. Heat pumps extract heat from the ______.

a) air, ground, or water (Luft, Erde oder Wasser)

b) fire and smoke (Feuer und Rauch)

12. They use a ______ to transfer heat effectively.

a) refrigerant (Kältemittel)

b) thermostat (Thermostat)

13. These systems work even in ______ outdoor temperatures.

a) warm (warme)

b) cold (kalte)

14. Installing a heat pump can reduce your ______.

a) energy bills (Energiekosten)

b) shopping costs (Einkaufskosten)

15. Heat pumps help lower ______ gas emissions.

a) greenhouse (Treibhausgas-)

b) nitrogen (Stickstoff-)

16. They are often combined with ______ energy sources.

a) fossil (fossile)

b) renewable (erneuerbare)

17. There are different types of heat pumps, like ______.

a) air-source and ground-source (Luft- und Erdwärme-)

b) water-source and fire-source (Wasser- und Feuer-)

18. Air-source heat pumps are the ______ type.

a) most common (häufigste)

b) rarest (seltenste)

19. Ground-source heat pumps use ______.

a) underground heat (Erdwärme)

b) surface heat (Oberflächenwärme)

20. Water-source heat pumps use ______ for heat transfer.

a) water bodies (Gewässer)

b) fire pits (Feuerstellen)