![subject](/tpl/images/cats/biologiya.png)
Karis studied for 30 minutes for her first test. She had her cell phone on as usual
and checked her cell phone several times during the 30 minutes. She made an F
on the test and her mom took her cell phone away. Poor Karis. The second test,
she again studied for 30 minutes but did not have her cell phone at all. She made
an A. Her mother was so happy, she gave Karis her phone back. Karis studied for
her third test for 30 minutes. She had her cell phone with her again. Karis made a
D on her test.
1. What is the control group?
2. What is the experimental group?
3. What is the independent variable?
4. What is the dependent variable?
5. What were the constants?
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 02:30
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 09:20
Which type of stimulus do mechanoreceptors detect? sound pain heat light
Answers: 2
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 20:00
Which does not describe a physical change happening to water? water evaporating in the sun water reacting with nitrogen gas water freezing and being broken apart with a knife water heating up on a stove
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 21:00
There are two tomato plantlets one of them is kept in an oxygen chamber with a light source and another is kept in sunlight. both of them are watered regularly what will be the observation after two weeks
Answers: 1
You know the right answer?
Karis studied for 30 minutes for her first test. She had her cell phone on as usual
and checked he...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 12:00
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 18.10.2019 12:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
Health, 18.10.2019 12:00
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 12:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/User.png)
SAT, 18.10.2019 12:00
![question](/tpl/images/cats/health.png)
Health, 18.10.2019 12:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.10.2019 12:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 18.10.2019 12:00
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 18.10.2019 12:00