candle lab make up
for each of the following experiments, identify:
a. the manipulating/independent variable
b. the responding/dependent variable
c. the control experiment
d. 3 controlled variables
1. an experiment was done to determine if the time it takes to run a kilometer depends on the amount of exercise a person gets,
a.
b.
c.
d.
2. an experiment was done to determine if the higher the temperature of water, the faster an egg will cook.
a.
b.
c.
d.
3. an investigation was done to see if keeping the lights on for different amounts of time each day affects the number of eggs chickens laid.
a.
b.
c.
d.
4. an experiment was done to determine if the temperature of water in a lake varied at different depths.
a.
b.
c.
d.
5. an experiment was done to determine if the amount of pollution produced by cars was affected by the amount of lead in the gasoline those cars used.
a.
b.
c.
d.
6. an experiment was done to determine if lemon trees receiving the most water produce the largest lemons.
a.
b.
c.
d.
7. five groups of rats are fed identical diets except for the amount of vitamin a that they receive. each group gets a different amount of vitamin a. after 3 weeks on the diet, the rats are massed (weighed) to see if the amount of vitamin a received has affected their mass.
a.
b.
c.
d.
8. which fruit contains the most vitamin c?
a.
b.
c.
d.

Question

candle lab make up
for each of the following experiments, identify:
  a.  the manipulating/independent variable
  b.  the responding/dependent variable
  c.  the control experiment
  d.  3 controlled variables
1. an experiment was done to determine if the time it takes to run a kilometer depends on the amount of exercise a person gets,
  a.
  b.
  c.
  d.
2. an experiment was done to determine if the higher the temperature of water, the faster an egg will cook.
  a.
  b.
  c.
  d.
3. an investigation was done to see if keeping the lights on for different amounts of time each day affects the number of eggs chickens laid.
  a.
  b.
  c.
  d.
4. an experiment was done to determine if the temperature of water in a lake varied at different depths.
  a.
  b.
  c.
  d.
5. an experiment was done to determine if the amount of pollution produced by cars was affected by the amount of lead in the gasoline those cars used.
  a.
  b.
  c.
  d.
6. an experiment was done to determine if lemon trees receiving the most water produce the largest lemons.
  a.
  b.
  c.
  d.
7. five groups of rats are fed identical diets except for the amount of vitamin a that they receive. each group gets a different amount of vitamin a. after 3 weeks on the diet, the rats are massed (weighed) to see if the amount of vitamin a received has affected their mass.
  a.
  b.
  c.
  d.
8. which fruit contains the most vitamin c?
  a.
  b.
  c.
  d.

Accepted Answer

### Problem 1:
#### a.
# Explanation:
## Step1: Identify independent variable
The independent variable is what's manipulated. Here, it's the amount of exercise a person gets.
## Step2: No calculation, just identification.
# Answer:
a. Amount of exercise a person gets

#### b.
# Explanation:
## Step1: Identify dependent variable
The dependent variable is what's measured. Here, it's the time to run a kilometer.
## Step2: No calculation, just identification.
# Answer:
b. Time to run a kilometer

#### c.
# Explanation:
## Step1: Define control experiment
A control experiment would be a group with a standard (e.g., average) amount of exercise.
## Step2: No calculation, just definition application.
# Answer:
c. A group with a typical amount of exercise (e.g., average weekly exercise)

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled variables are kept constant. E.g., same person, same running path, same weather.
## Step2: List 3: same runner, same path, same weather.
# Answer:
d. Same person running, same running path, same weather conditions

### Problem 2:
#### a.
# Explanation:
## Step1: Identify independent variable
Independent variable is water temperature.
## Step2: No calculation, just identification.
# Answer:
a. Temperature of water

#### b.
# Explanation:
## Step1: Identify dependent variable
Dependent variable is egg cooking time.
## Step2: No calculation, just identification.
# Answer:
b. Time for an egg to cook

#### c.
# Explanation:
## Step1: Define control experiment
Control: Egg cooked in water at a standard temp (e.g., room temp or 25°C).
## Step2: No calculation, just definition application.
# Answer:
c. Egg cooked in water at a standard temperature (e.g., 25°C)

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled: Same egg, same pot, same water volume.
## Step2: List 3: same egg, same pot, same water volume.
# Answer:
d. Same egg, same pot, same volume of water

### Problem 3:
#### a.
# Explanation:
## Step1: Identify independent variable
Independent variable: Time lights are on daily.
## Step2: No calculation, just identification.
# Answer:
a. Time lights are on each day

#### b.
# Explanation:
## Step1: Identify dependent variable
Dependent variable: Number of eggs chickens laid.
## Step2: No calculation, just identification.
# Answer:
b. Number of eggs chickens laid

#### c.
# Explanation:
## Step1: Define control experiment
Control: Chickens with lights on for a standard time (e.g., 12 hours).
## Step2: No calculation, just definition application.
# Answer:
c. Chickens with lights on for a standard time (e.g., 12 hours daily)

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled: Same chickens, same diet, same coop.
## Step2: List 3: same chickens, same diet, same coop.
# Answer:
d. Same chickens, same diet, same coop conditions

### Problem 4:
#### a.
# Explanation:
## Step1: Identify independent variable
Independent variable: Depth of water in the lake.
## Step2: No calculation, just identification.
# Answer:
a. Depth of water in the lake

#### b.
# Explanation:
## Step1: Identify dependent variable
Dependent variable: Temperature of lake water.
## Step2: No calculation, just identification.
# Answer:
b. Temperature of lake water

#### c.
# Explanation:
## Step1: Define control experiment
Control: Measuring temperature at a standard depth (e.g., surface/0m depth).
## Step2: No calculation, just definition application.
# Answer:
c. Measuring water temperature at the lake's surface (0m depth)

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled: Same lake, same time of day, same measuring device.
## Step2: List 3: same lake, same time, same device.
# Answer:
d. Same lake, same time of day, same temperature - measuring device

### Problem 5:
#### a.
# Explanation:
## Step1: Identify independent variable
Independent variable: Amount of lead in gasoline.
## Step2: No calculation, just identification.
# Answer:
a. Amount of lead in gasoline

#### b.
# Explanation:
## Step1: Identify dependent variable
Dependent variable: Amount of pollution from cars.
## Step2: No calculation, just identification.
# Answer:
b. Amount of pollution produced by cars

#### c.
# Explanation:
## Step1: Define control experiment
Control: Cars using gasoline with 0 lead (standard/control lead level).
## Step2: No calculation, just definition application.
# Answer:
c. Cars using gasoline with 0 lead (no lead)

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled: Same cars, same driving conditions, same gasoline type (excluding lead).
## Step2: List 3: same cars, same driving, same gasoline type.
# Answer:
d. Same cars, same driving conditions, same type of gasoline (excluding lead content)

### Problem 6:
#### a.
# Explanation:
## Step1: Identify independent variable
Independent variable: Amount of water lemon trees receive.
## Step2: No calculation, just identification.
# Answer:
a. Amount of water lemon trees receive

#### b.
# Explanation:
## Step1: Identify dependent variable
Dependent variable: Size of lemons produced.
## Step2: No calculation, just identification.
# Answer:
b. Size of lemons produced

#### c.
# Explanation:
## Step1: Define control experiment
Control: Lemon trees with a standard amount of water (e.g., average irrigation).
## Step2: No calculation, just definition application.
# Answer:
c. Lemon trees with a standard amount of water (e.g., average daily water)

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled: Same lemon trees, same soil, same sunlight.
## Step2: List 3: same trees, same soil, same sunlight.
# Answer:
d. Same lemon trees, same soil type, same sunlight exposure

### Problem 7:
#### a.
# Explanation:
## Step1: Identify independent variable
Independent variable: Amount of Vitamin A rats receive.
## Step2: No calculation, just identification.
# Answer:
a. Amount of Vitamin A rats receive

#### b.
# Explanation:
## Step1: Identify dependent variable
Dependent variable: Mass of the rats.
## Step2: No calculation, just identification.
# Answer:
b. Mass (weight) of the rats

#### c.
# Explanation:
## Step1: Define control experiment
Control: Rats with a standard amount of Vitamin A (e.g., recommended daily amount).
## Step2: No calculation, just definition application.
# Answer:
c. Rats receiving a standard amount of Vitamin A (e.g., recommended daily intake)

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled: Same rats, same diet (excluding Vitamin A), same environment.
## Step2: List 3: same rats, same diet, same environment.
# Answer:
d. Same rats, same diet (excluding Vitamin A), same living environment

### Problem 8:
#### a.
# Explanation:
## Step1: Identify independent variable
Independent variable: Type of fruit.
## Step2: No calculation, just identification.
# Answer:
a. Type of fruit

#### b.
# Explanation:
## Step1: Identify dependent variable
Dependent variable: Amount of Vitamin C in the fruit.
## Step2: No calculation, just identification.
# Answer:
b. Amount of Vitamin C in the fruit

#### c.
# Explanation:
## Step1: Define control experiment
Control: A standard fruit (e.g., orange) or a group with a reference fruit.
## Step2: No calculation, just definition application.
# Answer:
c. Using a standard fruit (e.g., orange) as a reference

#### d.
# Explanation:
## Step1: Identify controlled variables
Controlled: Same fruit quantity, same testing method, same fruit ripeness.
## Step2: List 3: same quantity, same method, same ripeness.
# Answer:
d. Same quantity of fruit, same Vitamin C testing method, same fruit ripeness

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Problem 1:

a.

Step1: Identify independent variable

Step2: No calculation, just identification.

Step1: Identify dependent variable

Step2: No calculation, just identification.

Step1: Define control experiment

Step2: No calculation, just definition application.

Answer:

b.