The method of heat transfer by which the Sun energy reaches the Earth is:(1 point)
Responses
Conduction
Conduction
Convection
Convection
Radiation
Radiation
Solaration
Radiation
How bright a star appears to us on Earth depends MAINLY on: (1 point)
Responses
the age of the star
the age of the star
your position on Earth
your position on Earth
The composition of the star
The composition of the star
the stars distance from Earth
the star's distance from Earth.
In the tundra, life forms are limited by the interaction of several of Earth’s spheres. One sphere that interacts with the geosphere, hydrosphere and biosphere is the cryosphere. What is this sphere responsible for in the tundra?(1 point)
Responses
poor, rocky soil
poor, rocky soil
low growing plants
low growing plants
ground permafrost
ground permafrost
mountainous terrain
ground permafrost.
Select the pair of bodies which are LEAST alike in composition and size.(1 point)
Responses
the Moon and a comet
the Moon and a comet
Earth and Venus
Earth and Venus
Uranus and Neptune
Uranus and Neptune
an asteroid and a meteor
the Moon and a comet
The inner planets are DIFFERENT from the outer planets mainly because they are:(1 point)
Responses
Larger
Larger
Colder
Colder
Comprised of rock
Comprised of rock
Comprised of gas
Comprised of rock.
Ronald observes a large island off the coast of Indonesia on a map. A few months later, he observes that there are many smaller islands in place of the large one he had seen earlier. Which of these could have caused this change?(1 point)
Responses
A tsunami
A tsunami
A mudslide
A mudslide
Wind erosion
Wind erosion
Volcanic eruption
Volcanic eruption
In the 19th century, scientists knew that light was some kind of wave. Every kind of wave science had yet described needed a medium to travel through—the way that sound waves travel through matter. But scientists had never observed light's medium. As they searched for evidence of it, scientists decided to call light's theoretical medium the luminiferous ether.
In 1887, Albert A. Michelson and Edward W. Morley conducted an experiment to measure the speed at which the Earth moves through the luminiferous ether. Their experiment was so refined that it should have finally detected the luminiferous ether, but it didn't. Repeated trials verified the surprising result that the ether did not exist.
How did the failure of the Michelson-Morley experiment change scientific theories of light?
(1 point)
Responses
The Michelson-Morley experiment proved that the luminiferous ether moved at the exact same speed as the Earth during all seasons of the year.
The Michelson-Morley experiment proved that the luminiferous ether moved at the exact same speed as the Earth during all seasons of the year.
The results of the Michelson-Morley experiment had to be rejected because the theory of the luminiferous ether was so well established.
The results of the Michelson-Morley experiment had to be rejected because the theory of the luminiferous ether was so well established.
The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, so the theory had to be rejected.
The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, so the theory had to be rejected.
The Michelson-Morley experiment provided a new theory that fit the data better than the theory of the luminiferous ether did.
The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, so the theory had to be rejected.
Which accurately describes Earth’s position and orientation during summer in the northern hemisphere?(1 point)
Responses
Earth is at its closest point to the Sun.
Earth is at its closest point to the Sun.
Earth’s hemispheres receive equal amounts of solar energy.
Earth’s hemispheres receive equal amounts of solar energy.
The north end of Earth’s rotational axis leans toward the Sun.
The north end of Earth’s rotational axis leans toward the Sun.
The Sun emits a greater amount of light and heat energy.
The north end of Earth’s rotational axis leans toward the Sun.
On a summer day, Thomas is standing in his driveway waiting for his mother . Energy from the Sun is making Thomas feel hot. This energy is being transmitted by three different methods. Which of the following is an example of convection?(1 point)
Responses
Energy streaming through space toward Thomas.
Energy streaming through space toward Thomas.
Heat being transferred from air particles to the asphalt.
Heat being transferred from air particles to the asphalt.
Heat moving through Thomas’s clothes to warm his skin.
Heat moving through Thomas’s clothes to warm his skin.
Warm air rising from just above the asphalt to reach the level of Thomas’s face.
Warm air rising from just above the asphalt to reach the level of Thomas’s face.
Scientists have found many marine fossils on mountains far from any ocean or sea. What is the best explanation for these fossils?(1 point)
Responses
Meteors with marine fossils landed on the mountains.
Meteors with marine fossils landed on the mountains.
The mountains were made out of land that was once below the ocean.
The mountains were made out of land that was once below the ocean.
Wind carried fossils from the seashore to the mountains.
Wind carried fossils from the seashore to the mountains.
Predators caught marine prey and carried it to the top of the mountains.
The mountains were made out of land that was once below the ocean.
The oldest rock formation identified on Earth is found on the shoreline of Hudson Bay in Canada. This rock formed 4.28 billion years ago. What information does a scientist need to more accurately determine the age of a rock? (1 point)
Responses
The amount of each radioactive element present in the rock.
The amount of each radioactive element present in the rock.
The percentage of each mineral that makes up the rock.
The percentage of each mineral that makes up the rock.
The thickness of younger rock layers that cover the rock.
The thickness of younger rock layers that cover the rock.
The amount of weathering present on the surface of the rock.