Earth 1
Earth 2
Earth 3
Use your fingers and toes.
What do you know?
100
Weathering or Melting
melting
100
the largest body of water on Earth
What is the ocean?
100
a nonliving thing from earth that makes up rocks
What is a mineral?
100
You collect nine stamps every week for three weeks. If you give away ten stamps, how many stamps do you have now?
- Total stamps collected: 9 × 3 = 27 stamps
- Stamps remaining: 27 - 10 = 17 stamps
100
What three colors appear on a traffic light?
Red, yellow, and green.
200
Large pieces of raised land. 
What are mountains?
200
a large stream of water that flows across the land
What is a river?
200
The soil used in this garden. 
What is topsoil?
200
A school orders ten boxes of markers, with each box containing eight markers. If thirty markers are given to students, how many markers remain?
- Total markers: 10 × 8 = 80 markers
- Markers remaining: 80 - 30 = 50 markers
200
What does a thermometer measure?
temperature
300
the name of the large pieces of land surrounded by water
What are continents?
300
Weathering or Erosion 
Erosion
300
a deep valley with steep sides, often with a river flowing through it
What is a canyon?
300
A school orders ten boxes of markers, with each box containing eight markers. If thirty markers are given to students, how many markers remain?
- Total candy pieces: 4 × 15 = 60 pieces
- Pieces left after eating: 60 - 20 = 40 pieces
300
On which holiday do you go trick-or-treating?
Halloween
400
a large body of water that is completely surrounded by land
What is a lake?
400
Characteristics used to describe and compare rocks.
color, shape, texture, hardness
400
Name this landform between the mountains. (no water)
Valley
400
If you plant six trees in each of the seven rows, how many trees do you plant in total? If you later decide to give away fifteen trees, how many trees do you have left?
- Total trees planted: 6 × 7 = 42 trees
- Trees left after giving away: 42 - 15 = 27 trees
400
What are baby dogs called?
Puppies
500
This is made of tiny rocks and dead plants. There are many different kinds.
What is soil?
500
When water changes the shape and size of rocks over time.
What is weathering?
500
This soil holds a little water and feels rough. 
What is sandy soil?
500
A school orders eight boxes of crayons, with each box containing twelve crayons. If twenty-four crayons are given to students, how many crayons remain?
- Total crayons = 8×12=96
- Remaining crayons = 96−24=72
500
In which continent is the Sahara Desert located?
Africa