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People have traveled into space many times since 1961, when a Russian cosmonaut in a tiny space capsule went into orbit around Earth. Since then, people have traveled into space in larger vehicles, including the space shuttle. Which kind of technolog
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
Uncrewed spacecraft have visited every planet in the solar system, but the only celestial body visited by astronauts was the Moon. Which group of statements best explains why uncrewed spacecraft and not astronauts have visited the planets?
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
Building models can help scientists make discoveries about the natural world. For example, scientists used cardboard cutouts of the chemical substances that make up the molecule responsible for heredity. This molecule is known as DNA. The scientists
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
Paleontology is a field of science that studies prehistoric life. What is one method that paleontologists use to learn about dinosaurs?
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
Some scientists use physical models to help them understand the natural world. Which is an example of a physical model?
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
Chemistry is the study of the composition of matter and its properties. Experimentation is the primary method by which chemists pursue scientific explanations. How do they know if the results of their experiments are valid?
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
Scientists use models to help them understand how the natural world operates. These models can take different forms. However, all models have one limitation. What is that limitation?
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
Environmentalists are very concerned about the destruction of rainforests for houses, farms, and mines. A group of environmental scientists want to monitor how much of the Amazon rainforest is cut down over a five-year period. Which two technologies
rocket technology that provides enough thrust to escape the pull of Earth’s gravity
The trip would take years because the planets are so far away; it would be dangerous because conditions are harsh; it would b
remote sensing and composite satellite images
a computer-generated image
a physical model
They use fossils to see how dinosaurs looked and acted
Models are never exactly like the real thing.
They are repeatable.
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