Engineering Design Test Review

What are the two most important words when writing a hypothesis?

• If / then

• If / they

• Is / then

• Is / they

Answer explanation

If (CAUSE) then (EFFECT)

We use hypothesis to predict what may happen and we have to use these two important words (if/then)

Organize these options into the right categories

Groups:

(a) Qualitative

,

(b) Quantitative

• 
• 
• 
• 
• 
• 
• 
• 

Answer explanation

Qualitative is data collected using WORDS

-Like the qualities of a good friend

Qua"n"titative is data collected using NUMBERS

In an experiment the​ (a)   group is given the normal treatment. They are left alone.

• control
• independent
• dependent
• procedure

Answer explanation

Think: just like the control variables. They are kept the same

Match the variable to the definition.

• Dependent Variable

• Variable that "I" change

• Control Variables

• Variables that stay the same

• Independent Variable

• Variable that is measured

Answer explanation

The dependent variable is found on the _ axis.

Answer explanation

The independent variable is found on the _ axis.

Answer explanation

What is the last step of the scientific method where we determine if our hypothesis was correct?

• Observations

• Analyzing Data

• Evidence

• Conclusion

How do scientists start off an experiment?

• Analyze data

• Research a topic

• Ask a question

• Writing a hypothesis

Answer explanation

Scientists begin an experiment with a question. They then research before writing the hypothesis.

In a science experiment using 40 dogs, Group 1 had 20 dogs that were given their normal diet. Group 2 had 20 dogs that were given a vitamin mixed in with their diet. Scientist were trying to see which group lived longer.

• Experimental Group

• Group 1

• Control Group

• Independent Variable

• How long the dogs lived

• Control Variables

• Vitamin

• Group 2

• Type of dog,

  Starting age of dogs

• Dependent Variable

Answer explanation

In this experiment the control group is Group 1 because they are getting their normal treatment. Group 2 is the experimental group because they are being tested. We are changing the vitamin in the dog diet (Independent) and are measuring how long they live (dependent). The control variables stay the same.

Tags

NGSS.MS-LS2-1

Select the months where the average high temperature is above 100°F.

Tags

NGSS.MS-ESS2-6