Question

1.
A group of students is testing how different temperatures of water affect the speed at which a sugar cube dissolves. They use cold, warm, and hot water and measure how long it takes for the sugar cube to dissolve in each case. Which is the dependent variable?

A

Temperature of the water

B

Time it takes for the sugar to dissolve

C

Size of the sugar cube

D

type of water
2.
Independent variables can be manipulated.


True

False
3.
A researcher is investigating how the amount of exercise affects heart rate. The researcher measures heart rate after different amounts of exercise.
Which is the dependent variable?

A

Amount of exercise

B

Heart rate

C

Type of exercise

D

all of these
4.
A student is testing how the color of a paper affects how fast people read a passage of text. The student uses red, green, and white paper and times how long it takes participants to read the text.
Which is the dependent variable?

A

Color of the paper

B

Time it takes to read the passage

C

Type of passage

D

Number of words
5.
A group of students is testing how different temperatures of water affect the speed at which a sugar cube dissolves. They use cold, warm, and hot water and measure how long it takes for the sugar cube to dissolve in each case. Which is the independent variable?

A

Temperature of the water

B

Time it takes for the sugar to dissolve

C

Size of the sugar cube

D

Type of water
6.
A scientist is investigating how different amounts of fertilizer affect the number of apples produced by apple trees. The scientist applies different amounts of fertilizer and counts the apples produced at the end of the season. Which is the dependent variable?


A

Type of fertilizer

B

Amount of fertilizer

C

number of apples

D

size of the trees
7.
A researcher is investigating how the amount of exercise affects the amount of calories burned. The researcher has participants exercise for different lengths of time and records how many calories they burn. Which is the independent variable?

A

Amount of exercise

B

Calories burned

C

Type of exercise

D

Gender of participants
8.
A researcher is studying how different amounts of water affect the growth rate of grass in a garden. The researcher gives the grass different amounts of water each day and measures how fast it grows. Which is the dependent variable?



A

Amount of water

B

Growth rate of grass

C

Type of grass

D

Amount of sunlight
9.
A student is testing how the amount of sunlight affects the growth of different types of plants. The student provides varying amounts of sunlight to the plants and measures how tall the plants grow.
Which is the independent variable?

A

Type of plant

B

Amount of sunlight

C

Height of the plants

D

Soil type
10.
A researcher is investigating how the amount of exercise affects the amount of calories burned. The researcher has participants exercise for different lengths of time and records how many calories they burn. Which is the dependent variable?

A

Amount of exercise

B

Calories burned

C

Type of exercise

D

Gender of participants
11.
In a study on plant growth, a researcher is testing how soil type affects the number of flowers produced by a plant. The researcher uses different types of soil and counts the flowers after two months.

Which is the independent variable?

A

Number of flowers

B

Type of soil

C

Height of the plants

D

none of these
12.
A student is testing how the amount of light affects the growth of plants. The student gives the plants different amounts of light and measures the plant height after one week. Which is the dependent variable?

A

Amount of light

B

Type of plant

C

Plant height

D

all of these

Answers

Answered by GPT-4o mini
Here are the correct answers to each question:

1. **B** - Time it takes for the sugar to dissolve
2. **True**
3. **B** - Heart rate
4. **B** - Time it takes to read the passage
5. **A** - Temperature of the water
6. **C** - Number of apples
7. **A** - Amount of exercise
8. **B** - Growth rate of grass
9. **B** - Amount of sunlight
10. **B** - Calories burned
11. **B** - Type of soil
12. **C** - Plant height

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