Unit 1: Intro to Biology

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

The independent variable is the ONE thing you _____.

• change on purpose
• control or keep constant
• measure

The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect 

• independent variable
• dependent variable
• control variable

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What variables should be kept constant/controlled? 

• type of plant, flower pot,  soil, and amount of sunlight
• water, apple juice, milk
• only the amount of sunlight
• type of plant only

Tags

NGSS.MS-ETS1-1

An experiment was performed to determine how the amount of coffee grounds could affect the taste of coffee.  The same kind of coffee, the same coffee maker, the same amount and type of water, the same brew time, and the same sources were used. What is the dependent variable?

• amount of coffee
• taste of coffee
• amount of water
• brew time

An experiment was performed to determine how the amount of coffee grounds could affect the taste of coffee.  The same kind of coffee, the same coffee maker, the same amount and type of water, the same brew time, and the same sources were used.  Which of the following is a control variable?

• amount of coffee
• taste of coffee
• time of day
• amount of water

A student tested three types of water to see which would cause plants to grow the tallest (tap water, bottled spring water, bottled distilled water).
What is the independent variable?

• the type of water
• the height the plants grew
• the type of plant
• the amount of soil

Tags

NGSS.MS-LS2-1

A student tested three types of water to see which would cause plants to grow the tallest (tap water, bottled spring water, bottled distilled water).
What is the dependent variable?

• the type of water
• the height the plants grew
• the type of plant
• the amount of soil

Tags

NGSS.MS-LS2-1

What is the total magnification of a microscope with two lenses when one lens has a magnification of 10x, and the other lens has a magnification of 30x?

• 15x
• 30x
• 40x
• 300x

When you focus on a new specimen, always begin with

• low power and coarse adjustment.
• low power and fine adjustment
• high power and coarse adjustment
• high power and fine adjustment