My World Unit # 1 Lessons 2 & 3 Geography

What causes the seasons?

• Earth’s changing distance from the sun during its orbit

• The sun’s changing energy output each year

• Earth’s tilt relative to its orbit around the sun

• Changes in the path of Earth’s orbit around the sun

Which best describes Earth’s mantle?

• It is made up of rock so hot that it flows.

• Because it is solid rock, it cannot flow.

• It is made up of metal so hot that it flows.

• Because it is solid metal, it cannot flow.

How does plate movement create mountains?

• The pressure created by moving plates forces magma up through Earth’s crust, forming

  mountains.

• When two plates push against each other, the pressure makes the crust bend to form

  mountains.

• When plates slide against each other at faults, the pressure forms mountains.

• When plates move away from each other, the pressure creates mountains.

How does erosion shape mountains?

• It creates pressures in Earth’s crust that cause it to bend.

• It removes material from mountains, changing their shapes.

• By breaking down material on Earth’s surface, it changes mountains’ shapes.

• The friction between plates of Earth’s crust pushes up mountains.

As one side of Earth turns away from the sun,

• the sun moves with it.

• the sun appears to rise on that side of Earth.

• the sun appears to set on that side of Earth.

• the sun moves to the other side of Earth.

Winds, air pressure, evaporation, and the angle of the sun shape the daily __________ of each

place.

• climate

• temperature

• weather

• precipitation

The difference between tropical and temperate climates is mainly the result of...

• wind patterns each season.

• precipitation patterns each season.

• Earth’s tilt relative to its orbit.

• the position of the sun in the sky.

__________ is greatest near the Equator, where air usually rises.

• Heat

• Precipitation

• Air pressure

• Dry air

An ecosystem is a network of __________ that depend on one another and their environment for

survival.

• plants and animals

• living things

• natural features and living things

• people

Which ecosystem usually supports thick forests of deciduous trees?

• tropical forest

• temperate forest

• savanna

• subarctic forest