10-23-2017 Comprehensive Periods 6 & 7 – Quiz; Empirical Evidence

Do Now Prepare for the quiz. Set up your privacy folders Sharpen your pencils, put away everything except your pencil and a silent reading book Set up your privacy folders

Quiz Instructions 15 minutes to complete the quiz. Read the directions carefully. No talking No getting up without permission Keep your eyes on your own work When you are finished, raise your hand and Mr. Santos will come to collect your quiz. Then, silently read.

Working with Indirect Evidence Activity Summary To successfully decode the number sequence from the color record, you needed to be careful in making observations and analyzing the data.

Nature’s Records of Climate Change (Proxy Data): These help us understand what the climate was like without us directly observing that climate Clues to how climate has changed exist in the natural world in tree rings, Arctic and Antarctic ice, and layers of sediments on the seafloor and lake bottoms. These data are indirect evidence of past climate because they help us to understand what the climate was like without us directly observing that climate.

Human Records of Climate Change

Summary The natural world leaves indirect evidence of climate change. Scientists study how things in the natural world are affected by changes in temperature so that they can decode indirect evidence left behind by these natural things.

Anecdotal Evidence Anecdotal Evidence: Evidence based on stories, not data Based on a story of someone’s experience, often just a single example. People are often drawn to anecdotal evidence that supports something they already believe. Scientists do not value anecdotal evidence because it is not based on data that are collected in an objective way.

Anecdotal Evidence Example Read the provided story. What makes it a good example of anecdotal evidence? Oral record is being used as evidence for the existence of the Loch Ness monster in Scotland. While many “sightings” of the monster have been recorded, evidence for its existence remains largely anecdotal.

Anecdotal Evidence (cont.) The Nessie story is an example of the kind of anecdotal evidence we might see or hear on TV or the Internet. Anecdotal evidence may be gathered to verify a case or suggest a conclusion. A problem with this kind of evidence is that often it either represents what the presenter wants you to hear or relies on unproven data.

Practice: With your shoulder partner, identify the following evidence as either empirical evidence or anecdotal evidence Kerry collects data showing that one day after flies land on meat, maggots appear. A controlled experiment shows that if flies are prevented from landing on meat, maggots do not appear. Mary had a box of rags. Mice formed out of it. Maggots simply appeared on a piece of meat Jim left out. Maggots kept in a laboratory and observed matured into flies. Moths were made from blankets stored in Grandma’s attic. Aaron saw frogs appear from only mud and water after a flood. Researchers detect tiny frog eggs when studying a pond.

Practice: With your shoulder partner, identify the following evidence as either empirical evidence or anecdotal evidence Empirical Evidence Anecdotal Evidence Kerry collects data showing that one day after flies land on meat, maggots appear. A controlled experiment shows that if flies are prevented from landing on meat, maggots do not appear. Maggots kept in a laboratory and observed matured into flies. Researchers detect tiny frog eggs when studying a pond. Mary had a box of rags. Mice formed out of it. Maggots simply appeared on a piece of meat Jim left out. Moths were made from blankets stored in Grandma’s attic. Aaron saw frogs appear from only mud and water after a flood.