IA 4th Grade MYF Science Review

Front

What is runoff in the context of water bodies?

Back

Runoff is water that flows over the ground surface and into water bodies, often carrying pollutants like chemicals from nearby areas.

Front

What effect do chemicals from farming have on nearby ponds?

Back

Chemicals can contaminate the water, harming aquatic life and disrupting the ecosystem.

Front

How do vibrations help sound travel?

Back

Vibrations create sound waves that travel through the air to reach our ears.

Front

What happens to a population of animals when their predators are removed?

Back

The population of those animals typically increases due to reduced predation.

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 gravity in motion?

Back

Gravity is a force that pulls objects toward the Earth, affecting their motion and trajectory.

Front

What is a food chain?

Back

A food chain is a sequence that shows how energy and nutrients flow from one organism to another in an ecosystem.

Front

What is the significance of a seesaw in understanding levers?

Back

A seesaw demonstrates how levers work by using a pivot point to balance and lift weight on either side.

Front

What happens to sound when it travels through different materials?

Back

Sound travels at different speeds depending on the material; it travels fastest in solids and slowest in gases.

Front

What is the impact of overhunting on animal populations?

Back

Overhunting can lead to a decline in predator populations, which can disrupt the balance of the ecosystem.