Nonrenewable Resoures
This type of resource takes millions of years to form and cannot be replaced within a human lifetime.
Nonrenewable resource
What does per capita mean?
Per person
What is the approximate age of Earth in years?
What is 4.6 billion years old?
What is "rock strata"
Which planet in the solar system is known for its large rings?
Saturn
________ ________ are forms from the remains of ancient plants and animals.
Fossil Fuels
As the population goes up, our consumption (or use) of natural resources also goes up.
(More people = more resources being used)
Scientists use rock layers and fossils to understand Earth's past. Explain why fossils found in deeper rock layers are usually older than fossils found in higher layers.
Deeper rock layers formed first, therefore the fossils have to be older.
How can matching rock layers across different place help scientists understand Earth's history?
Matching similar layers across places allows scientists to say those rocks formed at the same time. (same fossils, same rock types, etc.)
True or false: Sound can travel through space where there is no air.
False. Sound needs a medium to travel, so it cannot travel through the vacuum of space.
Global warming, Greenhouse gasses, Air pollution, etc...
How will increasing population plus higher per-capita consumption affect water supplies?
Less groundwater in aquifers
Geologic time periods are divided by:
a. an equal number of years.
b. the appearance and disappearance of certain life forms (fossils)
c. the thickness of rock layers.
d. changes in the pattern of the Sun's rays.
b. the appearance and disappearance of certain life forms.
A fossil of a sea creature is found high on a mountain in rock layers. What does this discovery tells scientists about the Earth's past?
It suggest that the area used to be underwater at some point in time, before the mountains formed.
What is the process called when water vapor (a gas) turns back into water (a liquid)?
Condensation
Name a non-renewable resource
Answers will vary
Examples: Petroleum, coal, copper, aluminum
Is the following statement true or false:
An increasing human population is resulting in fewer resources used per person.
What could a paleontologist (scientist who studies fossils) do to determine the time span during which a fossil lived?
Answers may vary...
Measure how far below the surface the fossil was found.
Consider the rock layer in which the fossil was found.
Why do we need to take drill cores (samples of rock layers) from multiple different place instead of just one?
Because no place on Earth has a full sample of all the rock layers there every was throughout Earth's history.
Which layer of Earth is made mostly of molten rock (magma) and lies beneath the crust?
The mantle