lesson 4 earth science
About what percent of the sun's energy received by earth is reflected by clouds and the atmosphere?
26
The warmth of earth surface affects the temperature of the planet. About what percent of the sun's energy received by earth is absorbed at the surface?
51
About what total percent of the sun's energy received by earth is absorbed by all components of the surface and air of the planet?
70
When we burn fossil fuels we are actually using sunlight energy that was captured and stored over millions of years. Which statement below is false concerning this process?
Burning these fuels stores some of the sunlight energy captured by plants from long ago.
The climate of earth varies because continents, coastlines, and oceans heat and cool at different rates. Which is not correctly matched?
Continental Interiors → slight annual temperature ranges
According to the modern theory of tectonic plates, what force causes the plates to move?
Convection currents in the earth cause the crust to move. Much like water currents in a frozen lake can cause slabs of ice floating on its surface to move.
How are plates moving relative to each other at convergent plate boundaries?
Convergent boundaries are collision boundaries. Two plates collide together often producing subduction as one plate is forced under another.
Photosynthesis and respiration are vital process for nearly earth's entire biosphere. Which statement is false as it applies to photosynthesis and respiration concepts?
Heat and pressure are two sources of energy which power photosynthesis
Which statement concerning the greenhouses effect and our environment is false?
Human actions are lowering the carbon dioxide levels in the atmosphere.
Look carefully at the map and locate the nation of Haiti. How would you explain the earthquake in Haiti?
It formed because of the motion of the Caribbean Plate and North American Plate
Part of the sun's energy that strikes the surface is used by plants in the process called photosynthesis. Why is this process important to earth's systems?
It is used to convert carbon dioxide and water into food for the biosphere thereby removing carbon dioxide from the atmosphere.
Volcanoes and the motion of the plates are related. Which is a true statement regarding the connection between plate motion and volcanoes of the earth?
Most volcanoes are found along plate boundaries.
When plate motion can affect other earth systems. Which of the following statements would be false concerning the connection between earth systems and plate motion?
Plate motion may affect changes in earth's atmospheric circulation.
Heat from inside the earth is the energy source that produces convection currents. These currents move the plates. What two processes are the major sources of the earth's interior heat?
Residual heat form earth's formation and radioactive decay
The motion of the earth's crustal plates creates all of the following except:
Rotation of the earth on its axis
Which statement below is not a fact concerning the energy budget of our earth?
Sunlight energy from the sun is increasing and infrared energy escaping from the earth is increasing.
Suppose a tropical jungle island like Borneo (one of the warmest and wettest places on earth) is moved by plate tectonics so that in 10 million years it is found near the Arctic Circle. Which of the following would be probable changes to its climate? Please choose the best answer.
The average temperatures would decrease
Plate motion creates stress which often produces earthquakes. Which of the following statements is false?
Transform fault boundaries generally have less earthquake activity than hot spot boundaries.
The South American and African plates are diverging, what physical evidence proves this?
the mid Atlantic ridge
How are plates moving relative to each other at divergent plate boundaries?
the plates separate from each other, creating rift valley and mid ocean ridges
How do volcano and earthquake patterns support the idea of plate tectonic theory?
they are usually found near the borders of plates, which is where plates slide against each other and create stress in the crust
