2018-2019 2nd 9 weeks test review-Science

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What gas is produced during photosynthesis?

Back

Oxygen is released during photosynthesis.

Front

How do you calculate distance traveled?

Back

Distance traveled can be calculated by multiplying speed by time.

Front

What is the definition of hardness in materials?

Back

Hardness is a measure of a material's resistance to being scratched or dented.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an example of a physical change?

Back

Chopping vegetables is an example of a physical change.

Front

What is the role of sunlight in photosynthesis?

Back

Sunlight provides the energy needed for plants to convert carbon dioxide and water into glucose and oxygen.

Front

What is the difference between speed and velocity?

Back

Speed is the distance traveled per unit of time, while velocity includes both speed and direction.

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is the purpose of a model in science?

Back

A model is used to represent and understand complex systems or processes in a simplified way.