Question:
Which is an example of conduction?
OPTIONS:
- a space heater turned on
- water boiling on the stove
- sunlight shining through the window
- a metal spoon warming in a pot of hot soup
Answer:
a metal spoon warming in a pot of hot soup
Question:
The brown tree snake is a nonnative species found on the South Pacific island of Guam. The brown tree snake population in Guam is so large that it negatively affects the humans there. Which statement best explains why the brown tree snake has flourished in Guam?
OPTIONS:
- There are many animals for food.
- There are no natural snake predators.
- The climate is ideal for snake reproduction.
- The vegetation provides good habitat for hunting.
Answer:
There are no natural snake predators.
Question:
Rocks found on Earth are classified as sedimentary, metamorphic, or igneous based on
OPTIONS:
- where the rocks were found.
- how the rocks were formed.
- the composition of the rocks.
- the color and shape of the rocks.
Answer:
how the rocks were formed.
Question:
The early Greeks are credited with many valid concepts in astronomy. Some of their theories were correct; some were later proven incorrect. One theory was that Earth was the center of the universe and that other planets circled Earth. The Greeks thought Earth did not move because its movement was not obvious from the surface of the planet. The Greeks also believed that an invisible sphere surrounding our planet contained the stars. This sphere rotated, explaining the apparent movement of constellations over time. Which celestial motion is responsible for the phases of the moon?
OPTIONS:
- the moon revolving around Earth
- Earth revolving around the sun
- the moon rotating on its axis
- Earth rotating on its axis
Answer:
the moon revolving around Earth