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Question
A slice of cheese is 3.0°C and is sitting on a dish that is 3.0°C. If the dish and cheese are in a refrigerator that is set to 3.0°C, which of the following statements is true? (1 point)
Responses
Heat will not flow because there is no temperature difference between the substances.
Heat will not flow because there is no temperature difference between the substances.
The temperature of the cheese will increase and the temperature of the dish will decrease.
The temperature of the cheese will increase and the temperature of the dish will decrease.
The temperature of the air in the refrigerator will decrease and the temperature of the cheese will increase.
The temperature of the air in the refrigerator will decrease and the temperature of the cheese will increase.
Heat will flow from the air in the refrigerator to the cheese and the dish.
Heat will flow from the air in the refrigerator to the cheese and the dish.
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Heat will not flow because there is no temperature difference between the substances.
Complete the following sentences by placing the correct word into the box. (1 point)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
The brightness of a star depends on how much light is released by the star and how far the star is from Earth. There are two ways to describe a star's brightness. A star's ____ area brightness is the brightness seen by humans on Earth. A star's _____ area brightness is its actual brightness and does not depend on where the star is viewed from.
Responses
Initial
Apparent
Terminal
Absolute
The brightness of a star depends on how much light is released by the star and how far the star is from Earth. There are two ways to describe a star's brightness. A star's apparent area brightness is the brightness seen by humans on Earth. A star's absolute area brightness is its actual brightness and does not depend on where the star is viewed from.
The picture below shows one cell dividing into two cells. Which of the following statements is best supported by the picture shown above?(1 point)
Responses
Both living and non-living organisms contain cells.
Both living and non-living organisms contain cells.
All organisms are multi-cellular.
All organisms are multi-cellular.
All cells come from pre-existing cells.
All cells come from pre-existing cells.
Cell division only occurs in animals.
All cells come from pre-existing cells.
Thousands of golden toads, shown below, used to occupy the tropical forests of Costa Rica. In the late 1980s, however, unusually warm weather caused many of the pools that the toads used as breeding areas to dry up. By 2004, the golden toad was listed as extinct. This example demonstrates how:(1 point)
Responses
extinction is caused by bacteria, fungi, and other infectious agents.
extinction is caused by bacteria, fungi, and other infectious agents.
extinction can be related to a failure to adapt to changes in the environment.
extinction can be related to a failure to adapt to changes in the environment.
extinction can be related to invasion by non-native species competing for resources.
extinction can be related to invasion by non-native species competing for resources.
extinction is directly related to human impact.
extinction can be related to a failure to adapt to changes in the environment.
At one time, most people believed that the Universe was static, meaning it did not change. When larger and better telescopes were invented in the early 1900s, however, it was discovered that light from objects in space shifted toward longer wavelengths. Scientists concluded that only an expanding Universe could explain this shift. Which of the following statements is supported by this example?(1 point)
Responses
Scientific knowledge can change when new evidence or interpretations arise.
Scientific knowledge can change when new evidence or interpretations arise.
The principle of the expanding Universe is a scientific law.
The principle of the expanding Universe is a scientific law.
Once a scientific theory has been accepted, it can never change.
Once a scientific theory has been accepted, it can never change.
The theory of the expanding Universe cannot change, even if new evidence arises.
Scientific knowledge can change when new evidence or interpretations arise.
The image below shows numerous volcanic mountains in the Pacific Northwest. What is the most likely cause of the volcanic and earthquake activity in this region? (1 point)
Responses
rising and falling tides in the ocean
rising and falling tides in the ocean
random abnormal weather occurrences
random abnormal weather occurrences
solar and lunar variations
solar and lunar variations
collision of tectonic plates