Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

scientific invest.1

QuestionAnswer
Biologists ask many questions to help them understand living systems.
some questions a biologist may ask: When did life first evolve on Earth?
some questions a biologist may ask: Why do mitochondria resemble some species of bacteria?
some questions a biologist may ask: How do sea tortoises navigate?
To answer these questions biologists need to collect evidence through scientific investigations.
most scientific investigations have five basic steps: 1 Forming a Hypothesis
2 most scientific investigations have
3 Data Collection
4 Interpreting Data
5 Communicating Results
The questions that biologists ask typically come from observations of the natural world.
To begin answering their questions biologists form hypotheses.
A hypothesis is a possible explanation for a set of observations or a possible answer to a scientific question.
A hypothesis must be phrased in the form of a statement (rather than a question), and it must be testable.
Scientist design experiments to test hypotheses
All factors that can change in an experiment are called variables
An experiment in which only one variable is changed at a time is called a controlled experiment
Because the variable in a controlled experiment differs between the control group and the experimental groups scientists can be more certain that differences in the variable are causing any differences observed in the outcome of the experiment.
Gathering data requires observations to be made
Many observations involve the senses of sight, hearing, touch, and smell
Often, scientists also use tools that increase the power of their senses or make their observations more precise.
Some tools commonly used by scientists include: balance
Some tools commonly used by scientists include: Graduated cylinder
Some tools commonly used by scientists include: Microscope
Some tools commonly used by scientists include: Spring scale
Some tools commonly used by scientists include: Thermometer
Some tools commonly used by scientists include: Test tube
Created by: swimmorgan15
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards