Homework Practice

Printable assignment

Earth System: Spheres and Solar Energy

Section A: Core Ideas

Question 1mcq

Which example shows interaction between the hydrosphere and atmosphere?

A.A compass points north.

B.The Moon reflects sunlight.

C.Rocks orbit the Sun.

D.Water evaporates from oceans into air.

Question 2mcq

Which surface usually reflects more solar radiation?

A.Ocean water at noon

B.Dark soil

C.Fresh snow

D.Black asphalt

Question 3mcq

Which option correctly completes this statement: Solar radiation is best described as?

A.Only visible red light.

B.Electromagnetic radiation from the Sun.

C.Sound waves travelling through space.

D.Matter particles falling from clouds.

Question 4mcq

Which option correctly completes this statement: For electromagnetic waves, higher frequency generally means?

A.Shorter wavelength

B.No energy

C.No relation to wavelength

D.Slower than sound always

Question 5mcq

What is the approximate speed of light in vacuum?

300\,m/s

3 \times 10^3\,m/s

30\,m/s

3 \times 10^8\,m/s

Section B: Application Practice

Question 6mcq

A glacier melts and adds water to a river where fish live. Which spheres are directly involved?

A.Only outer space

B.Only atmosphere

C.Cryosphere, hydrosphere and biosphere

D.Only geosphere

Question 7mcq

Which Earth component mainly transmits visible sunlight through to the surface?

A.Biosphere

B.Atmosphere

C.Core

D.Geosphere

Question 8mcq

Which type of energy reaches Earth from the Sun even through the vacuum of space?

A.Electromagnetic radiation

B.Sound energy

C.Water current energy

D.Seismic waves

Question 9mcq

For a wave described in a solar-radiation lesson, which relation correctly connects wave speed, frequency and wavelength?

v = f - \lambda

v = f + \lambda

v = \frac{\lambda}{f}

v = f\lambda

Question 10mcq

Why do we see sunlight after it travels across space?

A.Sunlight is pulled only by ocean water.

B.Sunlight is a sound wave.

C.Light can travel as electromagnetic radiation through vacuum.

D.Light needs air from the Sun to Earth.