IA 4th Grade MYF Science Review

Front

What is a fulcrum?

Back

The fulcrum is the point that supports a lever, allowing it to pivot and lift weight.

Front

What is a lever?

Back

A lever is a simple machine that uses a bar that pivots on a point (fulcrum) to lift or move objects.

Front

What is the role of the sun's energy in an ecosystem?

Back

The sun's energy is essential for organisms to survive as it is the primary source of energy for most ecosystems.

Front

What does it mean to reflect light?

Back

To reflect light means that light waves bounce back when they hit a surface, allowing us to see images.

Front

What can cause pollution in a pond?

Back

Pollution in a pond can be caused by chemicals from nearby farms running off into the water.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms interacting with each other and their environment.

Front

What is runoff?

Back

Runoff is water that flows over land and can carry pollutants into bodies of water.

Front

What is the importance of balance in a seesaw?

Back

Balance in a seesaw is important because it allows the seesaw to pivot correctly and function as a lever.

Front

What is energy flow in an ecosystem?

Back

Energy flow in an ecosystem refers to how energy is transferred from one organism to another, typically starting from the sun.

Front

What is the difference between reflection and refraction?

Back

Reflection is when light bounces off a surface, while refraction is when light bends as it passes through different materials.