Practice: bodies of water

Las preguntas de esta práctica

Puedes leerlas antes de empezar, hacerlas en un papel o repasarlas después. Cada una tiene su solución explicada.

1. 1 · Water on Earth

   How much of the surface of the Earth is covered in water?

   Think of the Earth from space.

   • a) About 30%
   • b) About 50%
   • c) About 70%
   • d) About 95%
   Ver la solución

   Respuesta: c) About 70%

   About 70% of the Earth's surface is water. The other 30% is land.

2. 2 · Oceans and seas

   Where is almost all the water on Earth?

   More than 95%.

   • a) In rivers
   • b) In lakes
   • c) In oceans and seas
   • d) In glaciers
   Ver la solución

   Respuesta: c) In oceans and seas

   Almost all the water on Earth is in the oceans and seas, and it is salt water.

3. 3 · Oceans and seas

   How many oceans are there?

   Pacific, Atlantic…

   • a) Three
   • b) Four
   • c) Five
   • d) Seven
   Ver la solución

   Respuesta: c) Five

   Five: the Pacific, the Atlantic, the Indian, the Southern and the Arctic.

4. 4 · Oceans and seas

   Seas are smaller than oceans and are…

   Look at the Mediterranean on a map.

   • a) made of fresh water
   • b) partly surrounded by land
   • c) frozen
   • d) underground
   Ver la solución

   Respuesta: b) partly surrounded by land

   Seas are smaller than oceans and partly surrounded by land. They have salt water too.

5. 5 · Bodies of water

   Match each body of water with its description

   Use the clues.

   1. River
   2. Lake
   3. Glacier
   4. Ocean

   • a) A flowing stream of fresh water
   • b) A thick mass of ice
   • c) An enormous area of salt water
   • d) Water completely surrounded by land
   Ver la solución

   Respuesta: River → A flowing stream of fresh water · Lake → Water completely surrounded by land · Glacier → A thick mass of ice · Ocean → An enormous area of salt water

   Rivers flow, lakes are surrounded by land, glaciers are ice and oceans are enormous areas of salt water.

6. 6 · Glaciers

   Are glaciers fresh water or salt water?

   They are made of snow.

   • a) Fresh water
   • b) Salt water
   Ver la solución

   Respuesta: a) Fresh water

   Glaciers form from snow, so they are fresh water. Most of the Earth's fresh water is frozen in ice.

7. 7 · Groundwater

   What do we call water that is under the ground?

   About 30% of fresh water.

   • a) Seawater
   • b) Groundwater
   • c) Rainwater
   • d) Salt water
   Ver la solución

   Respuesta: b) Groundwater

   Water under the ground is groundwater. It collects in aquifers.

8. 8 · Aquifers

   Drag the missing word

   Rock with tiny holes.

   rain → ? rock → aquifer → impermeable rock

   Fichas: porous · impermeable · volcanic · frozen

   Ver la solución

   Respuesta: porous

   Water filters down through porous rock and stops when it reaches impermeable rock: that is the aquifer.

9. 9 · Groundwater

   Match the words with their meaning

   Natural or made by people?

   1. Spring
   2. Well
   3. Aquifer

   • a) A hole dug to reach the aquifer
   • b) Groundwater flows out naturally
   • c) Layers of rock that hold groundwater
   Ver la solución

   Respuesta: Spring → Groundwater flows out naturally · Well → A hole dug to reach the aquifer · Aquifer → Layers of rock that hold groundwater

   A spring is natural, a well is dug by people, and an aquifer is where the groundwater collects.

10. 10 · Spain

    Which sea is in the north of Spain?

    Asturias and Cantabria are next to it.

    • a) The Mediterranean Sea
    • b) The Cantabrian Sea
    • c) The Dead Sea
    • d) The Red Sea
    Ver la solución

    Respuesta: b) The Cantabrian Sea

    The Cantabrian Sea is in the north. The Mediterranean is in the east and south, and the Atlantic Ocean in the west.