Q3_Makeup Work/Extra Credit_PS

When atoms break apart.

When atoms join together.

When new matter is created.

When a physical change happens.

100 grams

400 grams

500 grams

1000 grams

Matter is destroyed in both.

Matter is created in both.

Matter is neither created nor destroyed in both.

"More than 1,000 years ago, two Chinese scientists did an experiment."

"They mixed something called potassium nitrate with an element called sulfur and charcoal, and it exploded."

"Legend says the scientists were trying to make a drink that would help them live forever."

"They realized that by adding other minerals to the powder they could make different colors."

The main fuse is lit.

The flame travels through the lift charge.

The firework shoots through the air.

The chemicals inside start to burn.

A radio

A clock

An engine

A fire

Heat moves from the hot fire Paul and his father build to the cold air of the cabin.

A wood fire can reach temperatures of more than 1,000 degrees Fahrenheit.

After Paul fetches firewood, his father carefully stacks it in the shape of a pyramid.

Ten million Kelvin is a temperature about 30,000 times as hot as boiling water.

This text explains what a wood cabin is and how to build one

This text explains what heat is and how it moves from one object to another.

This text explains what UV radiation is and why it can be harmful to people.

This text explains what oxygen is and how the human body uses it to survive.

To find ways to help cities cool down

To find ways to help plants in cities

To learn why cities do not have many parks

To change roof colors on buildings in cities

Because they make their own food.

Because people put them on their roofs.

Because water evaporates from them.

Because they are green.

Cities could get more heatwaves that last longer.

Cities could be less popular than the countryside.

Cities could be 2 degrees Fahrenheit cooler during the day.

Cities could have more parks that people liked to walk in.