1.
Why did the dinosaurs disappear?
Correct Answer
C. No one knows for sure.
Explanation
The statement "No one knows for sure" suggests that there is no definitive explanation or evidence to conclusively determine why the dinosaurs disappeared. This indicates that the extinction of dinosaurs remains a mystery, and various theories have been proposed but none can be confirmed as the exact cause.
2.
A huge hole made by a meteorite crash is called
Correct Answer
C. A crater
Explanation
A huge hole made by a meteorite crash is called a crater. Craters are formed when a meteorite collides with the Earth's surface, causing a large impact that excavates a bowl-shaped depression. These depressions are commonly referred to as craters and can vary in size and depth depending on the size and velocity of the meteorite. Craters are often found in areas such as deserts or on the moon, where the lack of erosion allows them to remain well-preserved.
3.
One example of how the earth was like when the dinosaurs lived is
Correct Answer
A. There were huge earthquakes
Explanation
The correct answer is "There were huge earthquakes." This answer is supported by scientific evidence that suggests that during the time when dinosaurs lived, the Earth experienced frequent seismic activities. Fossils and geological records indicate that there were massive tectonic movements, which resulted in the formation of mountain ranges and the shifting of landmasses. These tectonic activities would have caused significant earthquakes, making this option the most plausible explanation for the Earth during the dinosaur era.
4.
Check all of the reasons why scientists thought the dinosaurs disappeared. There can be more than one.
Correct Answer(s)
A. A volcano erupted blocking out the sun.
C. A meteorite hit earth and added soot to the air.
Explanation
Scientists believe that a volcano erupted and blocked out the sun, leading to the disappearance of dinosaurs. This volcanic activity would have caused massive amounts of ash and debris to be released into the atmosphere, blocking sunlight and disrupting the climate. Additionally, a meteorite impact is also considered a possible reason for the extinction of dinosaurs. The impact would have caused widespread devastation, including fires and the release of soot into the air, further contributing to the extinction event.
5.
The weather could have become too _______ and chilly for the dinosaurs.
Correct Answer(s)
cold
Explanation
The word "cold" is the correct answer because it suggests that the weather became too low in temperature for the dinosaurs. This implies that the temperature dropped significantly, making the environment uncomfortable or even uninhabitable for the dinosaurs.
6.
Volcanoes caused large amounts of dust that blocked out the __________.
Correct Answer(s)
sun
sunshine
sunlight
Explanation
Volcanoes caused large amounts of dust that blocked out the sun, sunshine, and sunlight. When a volcano erupts, it releases ash and other particles into the atmosphere. These particles can form a thick layer that blocks the sun's rays from reaching the Earth's surface. As a result, the amount of sunlight and sunshine decreases, leading to darker and cooler conditions.
7.
Small animals could make dinosaurs disappear by stealing the dinosaurs' ________ and eating them.
Correct Answer
B. Eggs
Explanation
Small animals could make dinosaurs disappear by stealing the dinosaurs' eggs and eating them. This would result in a decline in the dinosaur population as their eggs are a crucial part of their reproductive cycle. By consuming the eggs, small animals would hinder the dinosaurs' ability to reproduce and eventually lead to their disappearance.
8.
When the dinosaurs died out,
Correct Answer
A. Some kinds of plants died, too.
Explanation
When the dinosaurs died out, it is likely that some kinds of plants also died. This is because dinosaurs were herbivores and relied on plants as their main source of food. With the extinction of dinosaurs, the loss of their grazing pressure would have affected the plant populations. Additionally, the sudden disappearance of large herbivores could have disrupted the ecosystem and led to changes in plant communities. Therefore, it is reasonable to assume that the extinction of dinosaurs would have had an impact on certain types of plants as well.
9.
What would cause dinosaurs to starve?
Correct Answer
C. Not enough food
Explanation
Dinosaurs would starve if there is not enough food available. This is because food is essential for their survival and energy needs. Without an adequate food supply, dinosaurs would not be able to sustain themselves and eventually die due to starvation. The lack of food would negatively impact their growth, reproduction, and overall health, leading to their eventual demise.
10.
An eruption is most like __________.
Correct Answer
B. An explosion
Explanation
An eruption is most like an explosion because both involve a sudden release of energy and material. Just like an explosion, an eruption can cause a violent burst or eruption of lava, ash, and gases from a volcano. Both events can be highly destructive and have the potential to cause significant damage to the surrounding environment. Additionally, both an eruption and an explosion can be accompanied by loud noises and a release of heat. Therefore, an eruption is best compared to an explosion.