Science Diagnostic quiz

A basic principle for scientific research is that the experiment must be able to be replicated what happens when an experiment is replicated

• Other scientists perform the same experiment and get comparable research

• Other scientists scrap the experiment and restart it

• Other scientists completely change the experiment

Regardless of method used to develop a scientific explanation what does a scientist always look for?

• temperature

• Trends or patterns

• energy

A student decides to be the subject in her own experiment, she wants to know how the amount of time she sends studying or a test affects the grade she makes on the test. For one semester, she keeps careful records of the spent studying and the resulting test grade. She makes a scatter plot of her results. What type of variable is study time in this experiment?

• test variable (independent variable)

• outcome variable (dependent variable)

A team of scientists studying glaciers in Greenland found that in the late 1900s a particular glacier on Greenland's west coast started moving faster toward the sea, melting more, and thinning. These changes are attributed to the warming period Earth has been experiencing over the last 100 years. If this warming trend continues, what could result?

• oceans will get colder

• Seafood decreases

• A significant rise in sea level

The graph below shows which wavelengths, in nanometers and corresponding colors of light are absorbed by the plant molecule chlorophyll A. Chlorophyll A is one of the molecules that plants use for photosynthesis.

• the least effective color of light for photosyntheses appears to be green

• Blue is the most absorbed color

• The wavelength for purple is the highest

Debate in the scientific community is deferent from others debates, such as political or economic debates. What are debate and confirmation in the scientific community backed by?

• qualitative data based on opinion

• Quantitative date the can be replicated

• what most people believe

what happens to a scientific theory if new data show a flaw in new assumption of a theory?

• the theory will stay the same with notes that say it changed

• nothing will happen

• the theory will be revised to change the incorrectly proven assumption

Why are distances between planets, stars, and solar systems measured in light years

• its a way for scientists to convert feet in space

• these distances are os large that a large distance unit is needed

• It is a measurement of time to see how long it will take to get from one place in space to the other

if two stars had equal absolute brightness, what else would most likely be the same

• energy

• temperature

• luminosity

• structure

to which of the following characteristics is the color of a star out closet linked

• light

• length from the sun

• temperature