Unit 1 (Experiments)-PANGHU

A student wants to know how much sawdust can be placed in a granola bar before their friends can tell (let's not try this). The student places different amounts of saw dust (5 mg, 10 mg, 15 mg, and 20 mg) in 200 mg granola bars. The friends are all the same age, are tested around lunch, and are given the same brand of granola bar with different saw dust amounts, except for one group that gets a granola bar containing no sawdust. The student records each participant's reaction to see if they noticed the sawdust or not.

WHAT IS THE INDEPENDENT VARIABLE OF THIS EXPERIMENT?

• Amount of sawdust

• Type of granola bar

• Age of students

• Time of testing

A student wants to know how much sawdust can be placed in a granola bar before their friends can tell (let's not try this). The student places different amounts of saw dust (5 mg, 10 mg, 15 mg, and 20 mg) in 200 mg granola bars. The friends are all the same age, are tested around lunch, and are given the same brand of granola bar with different saw dust amounts, except for one group that gets a granola bar containing no sawdust. The student records each participant's reaction to see if they noticed the sawdust or not.

WHAT IS THE DEPENDENT VARIABLE OF THIS EXPERIMENT?

• Reaction of Students

• Age of students

• Amount of sawdust

• Time of testing

A student wants to know how much sawdust can be placed in a granola bar before their friends can tell (let's not try this). The student places different amounts of saw dust (5 mg, 10 mg, 15 mg, and 20 mg) in 200 mg granola bars. The friends are all the same age, are tested around lunch, and are given the same brand of granola bar with different saw dust amounts, except for one group that gets a granola bar containing no sawdust. The student records each participant's reaction to see if they noticed the sawdust or not.

WHAT IS THE CONSTANT VARIABLE OF THIS EXPERIMENT?

• The brand of granola bar
• The time of day the friends are tested
• The age of the friends
• 200 mg granola bar
• The bar with no sawdust

What does the trial where the granola bar has no sawdust added

represent?

• Control group
• Experimental group
• Comparison group
• Placebo group

A student plants the same amount of the same species of bean seed in two different pots. He gives each pot the same amount of water and soil. One pot is put under yellow light and one pot is put under white light. The student records the two pot's growth to observe the growth of the bean seeds under different types of light.

WHAT IS THE INDEPENDENT VARIABLE?

• Type of light
• Species of bean seed
• Amount of water
• Size of the pots

A student plants the same amount of the same species of bean seed in two different pots. He gives each pot the same amount of water and soil. One pot is put under yellow light and one pot is put under white light. The student records the two pot's growth to observe the growth of the bean seeds under different types of light.

WHAT IS THE DEPENDENT VARIABLE?

• The growth of the bean seeds
• The type of soil used
• The amount of water given
• The color of the pots

A student plants the same amount of the same species of bean seed in two different pots. He gives each pot the same amount of water and soil. One pot is put under yellow light and one pot is put under white light. The student records the two pot's growth to observe the growth of the bean seeds under different types of light.

WHAT IS THE CONSTANT VARIABLE?

• Amount of water, soil, and species of bean seed
• Size of the pots
• Type of light bulb
• Color of the pots

A student plants the same amount of the same species of bean seed in two different pots. He gives each pot the same amount of water and soil. One pot is put under yellow light and one pot is put under white light. The student records the two pot's growth to observe the growth of the bean seeds under different types of light.

What is the constant of this experiment?

• There is no constant

• The pot with beens under normal light

• The pot with beans under yellow light