Practice: spheres, hemispheres and rotation

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 · The spheres

   Match each sphere with its definition

   Liquid, solid or gas?

   1. Atmosphere
   2. Geosphere
   3. Hydrosphere

   • a) All the land on and below the surface
   • b) Layers of gases around the planet
   • c) Water on and above the surface
   Ver la solución

   Respuesta: Atmosphere → Layers of gases around the planet · Geosphere → All the land on and below the surface · Hydrosphere → Water on and above the surface

   Hydrosphere = water (liquid), geosphere = land (solid), atmosphere = gases.

2. 2 · The spheres

   The continents are part of the…

   They are solid land.

   • a) hydrosphere
   • b) geosphere
   • c) atmosphere
   • d) biosphere
   Ver la solución

   Respuesta: b) geosphere

   Continents are land, so they are part of the geosphere.

3. 3 · The spheres

   Clouds are part of the hydrosphere. Why?

   What are clouds made of?

   • a) Because they are made of water
   • b) Because they are solid
   • c) Because they are very high
   • d) Because they are part of the land
   Ver la solución

   Respuesta: a) Because they are made of water

   Clouds are made of tiny drops of water, and all the water on and above the Earth is the hydrosphere.

4. 4 · The spheres

   Which sphere lets living things breathe and protects them?

   It surrounds the planet.

   • a) The geosphere
   • b) The hydrosphere
   • c) The atmosphere
   Ver la solución

   Respuesta: c) The atmosphere

   The atmosphere is the layer of gases that lets us breathe and protects the planet.

5. 5 · Hands on

   In the bottle with sand, water and oil, which material represents the geosphere?

   It sinks to the bottom.

   • a) The oil
   • b) The water
   • c) The sand
   • d) The lid
   Ver la solución

   Respuesta: c) The sand

   The sand is solid like the land, so it represents the geosphere. The water is the hydrosphere.

6. 6 · Hemispheres

   Which imaginary line divides the Earth into the Northern and Southern Hemispheres?

   It goes around the middle of the Earth.

   • a) The Greenwich Meridian
   • b) The Equator
   • c) The axis
   • d) The Tropic of Cancer
   Ver la solución

   Respuesta: b) The Equator

   The Equator divides the Earth into two halves: the Northern and the Southern Hemisphere.

7. 7 · Hemispheres

   In which hemisphere is Spain?

   Is it above or below the Equator?

   • a) Northern Hemisphere
   • b) Southern Hemisphere
   Ver la solución

   Respuesta: a) Northern Hemisphere

   Spain is above the Equator, in the Northern Hemisphere.

8. 8 · Imaginary lines

   Match each line with its description

   Parallel to the Equator or from pole to pole?

   1. Parallels
   2. Meridians
   3. Equator

   • a) Circles parallel to the Equator
   • b) Lines from the North Pole to the South Pole
   • c) The biggest parallel, around the middle
   Ver la solución

   Respuesta: Parallels → Circles parallel to the Equator · Meridians → Lines from the North Pole to the South Pole · Equator → The biggest parallel, around the middle

   Parallels go around the Earth like the Equator; meridians go from pole to pole.

9. 9 · Rotation

   Drag the missing word

   How long is one rotation?

   1 rotation = ____

   Fichas: 24 hours · 365 days · 12 hours · 7 days

   Ver la solución

   Respuesta: 24 hours

   The Earth takes 24 hours (one day) to spin once on its axis.

10. 10 · Rotation

    Why is it night in one part of the Earth?

    Think about the Sun.

    • a) Because the Sun switches off
    • b) Because that side is turned away from the Sun
    • c) Because the Moon covers the Sun
    • d) Because the Earth stops moving
    Ver la solución

    Respuesta: b) Because that side is turned away from the Sun

    As the Earth rotates, the side that does not receive sunlight has night.