Changing environments: reforestation and recycling | Science

Starter quiz

What is recycling?
- treating rubbish to produce useful materials that can be used again ✓
- leaving waste to rot
- using less of things
What is deforestation?
- planting new trees
- clearing land and removing trees ✓
- a forest that only contains deciduous trees
Which of these images shows landfill?
- Image 1
- Image 2
- Image 3 ✓
- Image 4
Izzy's mum has a shopping bag that she uses each time she goes to the shops. Which word describes using an object more than once?
- 'reuse' ✓
When changes benefit an environment or the living things within it, this has a ______ impact.
- 'positive' ✓
How does deforestation have a negative impact on the environment?
- Animals that hunt at night will find it difficult to catch their prey.
- Animals lose sources of food and shelter. ✓
- The plants and animals that once lived there have lost their habitat. ✓
- We will find it difficult to observe stars and other objects in the night sky.
- There will be far fewer plants as they will have been removed to make space. ✓

When forests are re-grown in areas that used to be populated by trees, this is called ...
- deforestation.
- recycling.
- reforestation. ✓
______ is when we collect and sort our rubbish instead of throwing it away. These items then get changed into something new for us to use.
- 'Recycling' ✓
When we ______ something, we use it again.
- 'reuse' ✓
Which of the following can have a positive effect on an environment?
- deforestation
- reforestation ✓
- recycling ✓
- landfill
Environmental scientists are constantly studying and finding ways to protect changing ...
- plants.
- rocks.
- environments. ✓
- materials.
How can we prevent rubbish going to landfill?
- recycling objects ✓
- putting objects in a general waste bin
- throwing litter on the ground
- reusing objects ✓

Positive impacts on environments can include reforestation and recycling.
Reforestation is when forests are re-grown in areas that used to be populated by trees.
When we recycle, we collect and sort rubbish instead of throwing it away. These items get changed into something new.
Recycling and reusing objects can prevent rubbish going to landfill and having a negative effect on the environment.
Environmental scientists are constantly studying and finding ways to protect changing environments.

All effects of human impact on the environment are negative.

Examples of positive effects of human impact on the environment.

Reforestation - Reforestation is the act of planting trees on an area of land that has become empty or spoiled.
Recycling - Recycling involves sorting and treating rubbish to produce useful materials that can be used again.
Reuse - When we reuse something, we use it again.
Landfill - Landfill is when we get rid of waste by burying it in the ground.
Environmental scientist - An environmental scientist studies the impact that humans have had on the environment, and works to protect changing environments.