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WorksheetsEarth's Changes Over Time 7
Total questions: 21
Worksheet time: 27mins
How do most fossils form?
An insect becomes trapped in amber.
An entire organism becomes frozen in ice.
A dead organism becomes buried in sediment.
A dead organism becomes buried in tar.
Which fossil would make the best index fossil? Explain why.
Which is an example of absolute age?
"This trilobite is older than that dinosaur."
"That stromatolite is the absolute oldest fossil I've ever seen."
"Velociraptors lived 71-75 million years ago."
"The oldest sedimentary layer is on the bottom."
Which two are fossil casts?
Identify the type of fossil in this image:
Mold
Cast
Trace
Mineral Replacement
Carbon Film
Consider the different types of fossils. Do all casts come from molds? Explain.
Which of the following is NOT a fossil fuel?
Coal
Oil
Natural Gas
Wood
How long does it take fossil fuels to form?
hundreds of years
thousands of years
millions of years
billions of years
Describe one pro AND one con of using fossil fuels as a source of energy
Fossil fuels are primarily made of the element...
Carbon
Nitrogen
Oxygen
Sodium
Order the steps of the fossil-fuel making process
Organism dies and is buried under sediment
Organism tissue decays
Elements from the tissue are absorbed into rocks
Heat and pressure is applied over millions of years
A fossil fuel is formed
Provide one similarity AND one difference between how fossils and fossil fuels are MADE.
How do greenhouse gases contribute to global warming?
They absorb Earth's heat and redirect it in all directions
They thicken the ozone layer which provides our heat
They emit heat, similar to the sun
They don't contribute to global warming
Provide one consequence that has already happened due to an increase in global warming.
True or False: CO2 (carbon dioxide) is the greenhouse gas that fossil fuels release when burned
True
False
It depends on the fossil fuel
What is climate change?
Which of these human activities contributes to climate change? There are 2.
Building houses
Cutting down forests
Biking to school
Buying food from local markets
The main culprit of climate change and global warming is/are...
Human activity
The sun's change in energy
Increased volcanic eruptions
Shifts in Earth's plate tectonics
