QUESTION IMAGE
Question
problem\tindependent variable\tdependent variable
which breed of dog is smartest?\tbreed of dog\tsmartness of dog
how does caffeine effect the heart rate of daphnia?\t\t
how does temperature effect the viscosity of fluids?\t\t
who can read backwards faster, boys or girls?\t\t
does weather effect the visibility of stars?\t\t
how does the size of eggs laid by a chicken change throughout its life?\t\t
To solve for the independent and dependent variables in each problem, we analyze what is being manipulated (independent) and what is being measured (dependent):
1. How does caffeine affect the heart rate of daphnia?
- Independent Variable: Caffeine (the factor being changed to observe its effect).
- Dependent Variable: Heart rate of daphnia (the outcome being measured).
2. How does temperature affect the viscosity of fluids?
- Independent Variable: Temperature (the factor being manipulated).
- Dependent Variable: Viscosity of fluids (the property being measured).
3. Who can read backwards faster, boys or girls?
- Independent Variable: Gender (boys vs. girls, the group being compared).
- Dependent Variable: Reading backwards speed (the performance being measured).
4. Does weather affect the visibility of stars?
- Independent Variable: Weather (the condition being varied).
- Dependent Variable: Visibility of stars (the outcome being measured).
5. How does the size of eggs laid by a chicken change throughout its life?
- Independent Variable: Chicken’s life stage (the time/developmental phase being studied).
- Dependent Variable: Size of eggs laid (the characteristic being measured).
Filled Table:
| Problem | Independent Variable | Dependent Variable |
|---|---|---|
| How does caffeine affect the heart rate of daphnia? | Caffeine | Heart rate of daphnia |
| How does temperature affect the viscosity of fluids? | Temperature | Viscosity of fluids |
| Who can read backwards faster, boys or girls? | Gender (boys/girls) | Reading backwards speed |
| Does weather affect the visibility of stars? | Weather | Visibility of stars |
| How does the size of eggs laid by a chicken change throughout its life? | Chicken’s life stage | Size of eggs laid |
(Note: For the last problem, “Chicken’s life stage” refers to the age/developmental period of the chicken, as this is what is being “changed” to observe egg size.)
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To solve for the independent and dependent variables in each problem, we analyze what is being manipulated (independent) and what is being measured (dependent):
1. How does caffeine affect the heart rate of daphnia?
- Independent Variable: Caffeine (the factor being changed to observe its effect).
- Dependent Variable: Heart rate of daphnia (the outcome being measured).
2. How does temperature affect the viscosity of fluids?
- Independent Variable: Temperature (the factor being manipulated).
- Dependent Variable: Viscosity of fluids (the property being measured).
3. Who can read backwards faster, boys or girls?
- Independent Variable: Gender (boys vs. girls, the group being compared).
- Dependent Variable: Reading backwards speed (the performance being measured).
4. Does weather affect the visibility of stars?
- Independent Variable: Weather (the condition being varied).
- Dependent Variable: Visibility of stars (the outcome being measured).
5. How does the size of eggs laid by a chicken change throughout its life?
- Independent Variable: Chicken’s life stage (the time/developmental phase being studied).
- Dependent Variable: Size of eggs laid (the characteristic being measured).
Filled Table:
| Problem | Independent Variable | Dependent Variable |
|---|---|---|
| How does caffeine affect the heart rate of daphnia? | Caffeine | Heart rate of daphnia |
| How does temperature affect the viscosity of fluids? | Temperature | Viscosity of fluids |
| Who can read backwards faster, boys or girls? | Gender (boys/girls) | Reading backwards speed |
| Does weather affect the visibility of stars? | Weather | Visibility of stars |
| How does the size of eggs laid by a chicken change throughout its life? | Chicken’s life stage | Size of eggs laid |
(Note: For the last problem, “Chicken’s life stage” refers to the age/developmental period of the chicken, as this is what is being “changed” to observe egg size.)