Quiz#1(Retake)

A scientist is studying how different amounts of water affect the growth of tomato plants. What is the independent variable in this experiment?

• Type of tomato plant

• Amount of water

• Growth of the tomato plants

• Type of soil

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In an experiment to see how the temperature of water affects the time it takes for sugar to dissolve, what is the dependent variable?

• Temperature of water

• Amount of sugar

• Time for sugar to dissolve

• Type of sugar

A student wants to find out if the color of light affects the growth of a plant. What should be kept constant in this experiment?

• Color of light

• Growth of the plant

• Type of plant

• Amount of water

Tags

NGSS.MS-ETS1-1

In an experiment to determine how the speed of a toy car is affected by the surface it rolls on, what is the independent variable?

• Speed of the toy car

• Type of surface

• Weight of the toy car

• Distance traveled

A researcher is testing how the salt concentration in water affects an egg's buoyancy(float/sink). What is the dependent variable?

• Concentration of salt

• Buoyancy of the egg

• Temperature of water

• Size of the egg

In an experiment to see how the angle of a ramp affects the distance a ball rolls, what should be kept constant?

• Angle of the ramp

• Distance the ball rolls

• Type of ball

• Surface of the ramp

A scientist is investigating how the amount of fertilizer affects the number of flowers on a plant. What is the independent variable?

• Number of flowers

• Amount of fertilizer

• Type of plant

• Type of fertilizer

In an experiment to find out how the type of music affects a person's heart rate, what is the dependent variable?

• Type of music

• Heart rate

• Volume of music

• Duration of music

Tags

NGSS.MS-LS1-5

A student is testing how the height from which a ball is dropped affects the height it bounces back. What should be kept constant in this experiment?

• Height from which the ball is dropped

• Height the ball bounces back

• Type of ball

• Surface on which the ball bounces

In an experiment to see how the amount of sugar affects the taste of lemonade, what is the independent variable?

• Amount of sugar

• Taste of lemonade

• Temperature of lemonade

• Type of sugar