AZ Science Review

Kumar carried out an experiment to test if a shirt hung indoors takes a longer time to dry compared to one that was dried outdoors. In this experiment, the DEPENDENT variable is the ______.

Ahmad was given two pots of identical balsam plants by his parents. He put one in the garden under direct sunlight and the other inside his bedroom with little sunlight. He observed that the plant in the garden has grown taller compared to the one in his bedroom.

What variable should remain CONSTANT?

• type of balsam plants

• height of balsam plants

• amount of sunlight

• location of plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The part labelled A is the _____.

Hydrochloric acid is burns through surfaces and skin. Which symbol should be placed on a bottle of hydrochloric acid?

• 
• 
• 
• 

Name the apparatus.

• retord stand

• retort stand

• tripod stand

• retod clamp

What is a precaution you take when heating chemicals? (There are more than one correct options)

• wear safety goggles

• tie up long hair

• point the test tube at someone else

• Use tongs to hold the test tube

Which of the following is a feature of the flame shown?

• unsteady flame

• burns without soot

• air hole is closed

• burns at a lower temperature that luminous flame

Tags

NGSS.MS-PS3-4

Which variable is changed in an experiment by the scientist?

• dependent variable

• independent variable

• qualitative data

• constant variable

Tags

NGSS.MS-PS2-2

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. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is _____.

• The type of pplant

• The amount of sunlight

• The type of music

• The type of liquid

If you increase the amount of spinach you eat, then you will increase the iron in your blood. What's the dependent variable?

• the amount of iron in your blood

• the amount of spinach you eat