Checkpoint- Growing Plants

What is a fair test?

• A test where multiple variables are changed to see different effects

• An experiment in which only one variable is changed

• A test where the mass of an object is measured

• A combination of chemical nutrients

Tags

NGSS.MS-PS2-2

What is the difference between mass and weight?

• Mass is the amount of matter in an object, while weight is the force of gravity on an object

• Mass is the force of gravity on an object, while weight is the amount of matter in an object

• Mass and weight are the same thing

• Mass is a type of variable in an experiment, while weight is not

What does a seed contain?

• Chemical nutrients including nitrogen, phosphorus, and potassium

• The embryo of a plant

• Tiny rock fragments and organic matter

• One variable that can be changed in an experiment

What is a variable in the context of an experiment?

• The amount of matter in an object

• A factor that can be changed in an experiment

• A mixture of decaying organic materials

• A small, hard structure that contains the embryo of a plant

Tags

NGSS.MS-LS1-1

This image shows a bean sprout. What does this sprout need to grow into a healthy plant?

• Fertilizer only

• Water only

• Light only

• Water and light

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

Which of these plants most likely grew in the dark?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

A student wants to determine the effect of soil type on plant growth. He sets up four pots as shown below. How could this experiment be improved?

• All four pots should have the same kind of soil.

• All four pots should have the same kind of seed, the same amount of light, and the same amount of water.

• The four pots should have different amounts of water.

• There is nothing wrong with this experiment.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Kray set up an experiment to test the effect of light on tomato plants. The results of their experiment are shown below. What is the best conclusion they could make from this experiment?

• Tomato plants grow tallest in bright light.

• Tomato plants grow heaviest in dim light.

• Tomato plants grown in bright light will be shorter but have more mass than tomato plants grown in dim light.

• No conclusion can be drawn from this experiment because it was not a fair test.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Pots A and B both have plain soil, bean seeds, and the same amount of light. Pot B receives more water (see table). After 50 days the plants are measured. Based on the data, what is the correct conclusion?

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

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

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

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What variable was tested in this experiment?

• Plant height

• Seed type

• Compost

• Mass

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1