Midterm Review Created by Educational Technology Network. www.edtechnetwork.com 2009

Light bulb moment I am a genius Science Nerd A is for effort Mad scientist 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50

Topic 1 – 10 Points QUESTION: ANSWER: observation Using one or more of your senses to gather information is called ANSWER: observation

Topic 1 – 20 Points QUESTION: ANSWER: Independent variable A variable that is purposely changed to test a hypothesis is a(n) ANSWER: Independent variable

Topic 1 – 30 Points QUESTION: ANSWER: 10 The metric system of measurement is based on the number. ANSWER: 10

Topic 1 – 40 Points QUESTION: ANSWER: volume What would you measure using a graduated cylinder? ANSWER: volume

Topic 1 – 50 Points QUESTION: ANSWER: The distance between 2 cities For which would the kilometer be the most appropriate unit of measure? ANSWER: The distance between 2 cities

Topic 2 – 10 Points QUESTION: ANSWER: The length of an ant What would the millimeter be the most appropriate unit of measure? ANSWER: The length of an ant

Topic 2 – 20 Points QUESTION: ANSWER: mass What would you measure using a balance? ANSWER: mass

Topic 2 – 30 Points QUESTION: ANSWER: meter The basic unit of length in the metric system is the ANSWER: meter

Topic 2 – 40 Points QUESTION: ANSWER: 1000 How many meters are there in a kilometer? ANSWER: 1000

Topic 2 – 50 Points QUESTION: ANSWER: mass In SI, the kilogram is the basic unit of ANSWER: mass

Topic 3 – 10 Points QUESTION: ANSWER: Volume The amount of space an object takes up is its ANSWER: Volume

Topic 3 – 20 Points QUESTION: ANSWER: Divide mass by volume To calculate the density of an object, you would ANSWER: Divide mass by volume

Topic 3 – 30 Points QUESTION: ANSWER: Kelvin The official SI unit of temperature is ANSWER: Kelvin

Topic 3 – 40 Points QUESTION: ANSWER: Left to right or across The horizontal axis of a graph runs ANSWER: Left to right or across

Topic 3 – 50 Points QUESTION: ANSWER: Scientific explanation Trying to explain why a solar eclipse occurs is an example of. ANSWER: Scientific explanation

Topic 4 – 10 Points QUESTION: ANSWER: Able to be tested A scientific hypothesis must be ANSWER: Able to be tested

Topic 4 – 20 Points QUESTION: ANSWER: Making assumptions What is not a way to gain scientific knowledge? ANSWER: Making assumptions

Topic 4 – 30 Points QUESTION: ANSWER: Scientific explanation The statement, "Moonlight is caused by the moon reflecting sunlight" is an example of a(n) ANSWER: Scientific explanation

Topic 4 – 40 Points QUESTION: ANSWER: How are opinion and scientific evidence are related? ANSWER: An opinion may be formed by evidence

Topic 4 – 50 Points QUESTION: ANSWER: farmers Rachel Carson caused controversy with her research about the harmful effects of the pesticide DDT. Which group most likely would have disagreed with her findings? ANSWER: farmers

Topic 5 – 10 Points QUESTION: ANSWER: Scientific theory A well-tested explanation for a wide range of observations or experimental results is called a ANSWER: Scientific theory

Topic 5 – 20 Points QUESTION: ANSWER: Nearly 2,000 years ago the astronomer, Ptolemy, believed that all objects in space, including the sun, revoled around Earth. 500 years ago, Nicolaus Copernicus made observations showing that Earth and other planets revolved around the sun, which refuted Ptolemy’s arguement.This is an example of how scienctific knowledge ANSWER: Changes as a result of new evidence

Topic 5 – 30 Points QUESTION: ANSWER: Why is it useful for scientists to develop model for the structure of atoms? ANSWER: Atoms are too small to study directly

Topic 5 – 40 Points QUESTION: ANSWER: Carbon dioxide What is an example of output from a circulatory system? ANSWER: Carbon dioxide

Topic 5 – 50 Points QUESTION: ANSWER: feedback In a home central heating system, when the room temperature measured by the thermostat reaches a set value, the thermostat switches off the heater. This action by the thermostat is an example of ANSWER: feedback