Download Study Questions Life Science 9 Weeks Test Chapter 1 Lesson 1 1

Study Questions Life Science 9 Weeks Test
Chapter 1 Lesson 1
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Grouping together all the things that are alike is called classifying.
An independent variable is changed to test a hypothesis.
What is the independent variable, dependent variable, and hypothesis?
a. How do the chemicals in fertilizer effect plants growth?
i. Independent variable= chemicals
ii. Dependent variable= plants growth
iii. Hypothesis= If there are more chemicals in the fertilizer than the plants will grow
more.
Tom saw that the stop sign on his street had been knocked down. What can he infer from this
observation? Someone hit the stop sign with their car.
Qualitative observations are observations that cannot be expressed in numbers..
After Jane Goodall collect her data on the chimps she evaluates the data?
Chapter 1 Lesson 2
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Inductive Reasoning uses specific observations to make generalizations.
Complete the following sentence and tell whether it is inductive or deductive reasoning.
a. The elm is a tree and all trees have bark, so elms have bark.
A scientist that refuses to do experiments on humans that will harm or kill them is ethical.
What are the 3 biases?
a. Experimental
b. Cultural
c. personal
Give an objective and subjective statement about the classroom.
a. Objective- The walls are beige
b. Subjective- I do not like the colors of the walls.
What are the 7 attitudes of a scientist?
a. Honesty, curiosity, creativity, awareness of bias, open-mindness, skepticism, ethics
Chapter 1 Lesson 3
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What are the basic units for measuring mass, length, volume, density, time, and temperature?
a. Mass- kilograms
b. Length- meters
c. Volume- cubic meter
d. Density- kilograms per cubic meter
e. Time- seconds
f. Temperature- Kelvin
Why is the SI system so important?
a. Allows scientist to compare data and communicate with each other about their results.
Weight is measure of force of gravity acting on an object.
An object floats if it is less dense than the surrounding liquid.
If and objet has a density of 1.5g/cm3, then will it sink or float in a liquid that has a density of 2 g/cm3?
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Convert 63.8 kilograms into hectograms, milligrams, and grams.
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638 hectograms
63800000 milligrams
63800 grams
Chapter 2 Lesson 1
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Scientific evidence is always based on empirical evidence.
Scientific explanations describes how something works or why something happens.
What methods do scientist use to form scientific explanations?
a. Researching information, designing experiments, and making models
Chapter 2 Lesson 2
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A scientist’s work can cause a controversy, or a public disagreement between people.
Galen was a physician to the Gladiators during ancient Roman times. He’s literature on the human
anatomy was fundamentally wrong because he only studied animals. Many years later scientist began to
write literature about the human anatomy and actually preformed dissections on humans. Andreas
Versiles disproved Galen’s teachings about many things, 2 in particular is the human thigh bone is
straight and men and women have the same number of ribs.
The book Silent spring was about the effects of pesticides, such as DDT, on the environment.
Galileo’s books he published when against the geocentric model of the universe.
Women were dying because doctors were not washing their hands before going to deliver the babies.
Chapter 2 Lesson 3
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New evidence or new interpretations of existing evidence changes scientific knowledge.
Using information from the Venn diagram on scientific laws vs theories, give 2 ways laws and theories are
different and 2 ways they are similar to one another.
Scientific Theory
Similar
Scientific Law
1. Well tested hypothesis
1. Both used to help
1. Describes observations
2. Well supported by
advance technology
and patterns in nature
evidence and is
2. Both used to make
without trying to
generally accepted as
predictions
explain those patterns
being true
2. Can be expressed as a
single mathematical
expression
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A Theory is a well-tested explanation for a wide range of observations or experimental results.
Name a law and a theory and give a description for each.
a. Plate Tectonics
i. There are 8 major tectonic plates and a bunch of minor plates that make up the
Earth’s lithosphere. The theory states that these plates are constantly moving at
centimeters per year. The plates are floating on a layer of molten rock, the
asthenosphere.
b. Law of superposition
i. Any undisturbed sequence of rocks deposited in layers, the youngest layer is on
top and the oldest on the bottom.
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Plate Tectonics are made up of the lithosphere, which is the upper mantle and crust.
Chapter 2 Lesson 4
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Scientist use models to understand things they cannot observe directly.
Systems have common properties. All systems have input, process, and output.
On page 79 in your book what is the input, output, and process of the sea breeze system?
a. Input- sun’s energy
b. Process- the sun heating the land, which heats the air above it. The warm air then rises. The
cooler air rushes into the empty space, resulting in the breeze.
c. Output- the breeze
What is the energy source for a food web system? Sun
Scientist also use modles to predict changes in a system as a result of feedback or input changes.
Why would a scientist create a food web for an environment?
a. To study how energy moves through living things in an environment.
Replication vs Repetition
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In the paper airplane exercise there were multiple trials in the experiment. Therefore, there was
repetition in the experiment.
Replication and repetition help to eliminate experimental bias because the experiments are either being
repeated multiple times or redone completely to determine the actually results.
In medicine drug trials scientist conduct multiple trials of the drug’s effects in an experiment.
Before a theory becomes a theory scientist must test the hypothesis again and again. Therefore, the
scientists are replicating the experiment.
Replication aids in an experiments accuracy. Repetition aids in an experiments precision.
Replication is when you redo and entire experiment.
Spiraling Lesson Launchers
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Mercury, Venus, Earth, and Mars are the 4 inner planets.
Mars is called the “red planet” and has 2 moons. Whereas, Earth only has one.
Mercury is the smallest planet. Venus has the hottest surface of any planet.
What are the 3 layers of the Earth?
a. Crust
b. Mantle
c. core
All weather occurs in the troposphere. We live in this layer.
The ozone absorbs harmful ultra violet rays, which is a part of the stratosphere.
Thermosphere is the layer of the atmosphere that astronauts spend their time orbiting the Earth.