7th Grade Science Fall Final Review

Which of these is an example of an unsafe practice in a lab?

• testing a substance by tasting it

• watering a plant without wearing gloves

• detecting an odor by moving air toward you with your hand

• pulling your hair back when working with flames

What does this symbol indicate about a chemical?

• It can cause injury to body tissue.

• It catches fire easily.

• It is hazardous to the environment.

• It can be harmful to your lungs.

Which of these would always require the use of goggles?

• I and III

• I, II, III, IV

• II only

• II, III

Tags

NGSS.MS-PS1-2

No matter how a seed is planted, when it begins to sprout the roots will grow down toward the center of the earth and the stem will grow in the opposite direction. This is a function of:

• Gravitropism

• Hydrotropism

• Phototropism

• Thigmotropism

The stem and leaves of the plant in the diagram are exhibiting which behavior?

• Gravitropism

• Geotropism

• Autotropism

• Phototropism

Photosynthesis is the process that uses light energy to make food for organisms. Which of the following are end products made by this process? Select two correct answers.

• glucose

• chloroplasts

• oxygen

• carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What happens to the solar energy absorbed by plants during photosynthesis?

• It is recycled by the plant and returned to the atmosphere.

• It is converted into oxygen and glucose.

• It is stored as heat within the plant for cellular functions.

• It is transformed into chemical energy.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What process in the natural world converts radiant energy into chemical energy?

• respiration

• phototropism

• combustion

• photosynthesis

Tags

NGSS.MS-LS1-6

Complex interactions must occur before solar energy is converted into a form of energy humans need to work and perform many life processes. Choose the sequence that best shows this path of energy.

• radiant energy

  chemical energy

  mechanical energy

• light energy

  mechanical energy

  chemical energy

• mechanical energy chemical energy radiant energy

• mechanical energy

  radiant energy chemical energy

Tags

NGSS.MS-LS1-6

In this diagram, where is light energy converted to chemical energy?

• Sun

• Grass

• Grasshopper

• Hawk

Tags

NGSS.MS-LS1-6