A drought is a long time with little rain that causes the land to get very dry.
100
What is the environment?
An environment is all the living and nonliving things in a place.
100
What is a star?
A star is a huge ball of hot gases
200
What is an erosion?
Erosion is when moving water changes the land by carrying rocks and soil to new places
200
What is pollution?
Pollution is waste that harms the air, water, or land.
200
What tool can you use to measure how hot or cold something is?
You can use a thermometer to measure how hot or cold something is.
300
What causes a flood?
When rivers and streams get too full and water flows onto land, it causes a flood
300
What causes air pollution?
Smoke and fumes from factories and cars.
300
What are the three states of matter?
Liquids, solids, and gases
400
What can cause a forest to catch on fire?
Sometimes when lightning strikes a dry forest, a tree may catch on fore causing a forest fire.
400
What are some effects of air and water pollution?
Dirty air can harm people's lungs and make it hard for people to breathe. It also harms plants and animals. Dirty water can make people and animals sick and it can harm plants.
400
What can cause an animal to need a new home?
When the trees in which animals are living are cut down, animals must find new homes.
500
What effects does a drought have to a land area?
The land gets very dry. Without water, plants and animals may die.
500
What are some ways to reduce pollution?
Stop littering, ride bikes or public transportation, turn off air conditioning units and open windows.
500
When water changes from a liquid to a gas, what is this called?