MDCPS Science Big Ideas

Cactuses (cacti) were studied to determine if the amount of humidity affects the growth of the plants. Which of these was the independent variable in the study?

• the growth of the plant

• the type of sand

• the different cactuses (cacti)

• the amount of humidity

Tags

NGSS.MS-LS1-5

Cactuses (cacti) were studied to determine if the amount of humidity affects the growth of the plants. Which of these was the dependent (outcome/responding) variable in the study?

• the growth of the plant

• the type of sand

• the different cactuses (cacti)

• the amount of humidity

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Look at the table. Plants were grown in different environments to see if temperature affects the number of new leaves per week. Which variable is the outcome (dependent/responding) variable?

• water per day

• temperature of environment

• relative humidity

• average number of leaves per week

Tags

NGSS.MS-LS1-5

Look at the table. Which factors are the constant variables?

• water and temperature only

• water, temperature, number of hours of daylight, relative humidity

• number of plants, water, number of hours of daylight, relative humidity

• number of plants, water, temperature, number of hours of daylight, relative humidity, number of leaves

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Look at the table. Plants were grown in different environments to see if temperature affects the number of new leaves per week. Which variable is the independent (manipulated/test) variable?

• water per day

• temperature of environment

• relative humidity

• average number of leaves per week

Tags

NGSS.MS-LS1-5

Tessy has been growing tomato plants without fertilizer. Now, she wants to see what happens to the plants when the amount of fertilizer is increased, as shown in the chart. Which plant is the control group?

• plant 1

• plant 2

• plant 3

• plant 4

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Look at the table. Tessy has been growing tomato plants. Now, she wants to see if the amount of fertilizer affects the growth of the tomato plant. Which of these was the test (independent/manipulated) variable?

• amount of water

• amount of fertilizer

• the height of plant

• the plant number

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Look at the table. Tessy has been growing tomato plants. Now, she wants to see if the amount of fertilizer affects the growth of the tomato plant. Which of these was the outcome (dependent/responding) variable?

• amount of water

• amount of fertilizer

• the height of plant

• the plant number

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Plant 1 and 2 both have plain soil, bean seeds, and the same amount of light. Plant 2 received more water. After 5 weeks the plants are measured. Based on the data, what is the correct conclusion?

• The amount of water affects the height but not the mass of the plant.

• The amount of water affects the mass but not the height of the plant.

• The amount of water affects the mass and the height of the plant.

• The amount of water does not affect the mass or the height of the plants.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What does this graph of plant heights show?

• Plant 2 grew taller than plant 1.

• Plant 1 was always taller than plant 2.

• Plant 1 grew steadily. Plant 2 grew quickly and then stopped growing.

• Plant 2 grew steadily. Plant 1 grew slowly at first and then grew quickly.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1