Planet Earth Flashcards Preview

Science - grade 4 > Planet Earth > Flashcards

Flashcards in Planet Earth Deck (25):
1

What is a feature?

An interesting or noticeable part of something.

2

Sphere

A round shape like a ball

3

Surface

The outside part or top layer of something

4

Sphere does sand and soil come from?

Sand is mixed with dead or rotting material.
Soil is sand that is mixed with dead leaves and plants.

5

What is the earth made of?

Of rock

6

How many planets are there?

Eight

7

Is earth a planet or star?

Planet

8

Is earths rocky surface smooth?

No. It has huge mountains, and hollow deep parts. The hollow parts collect with water like a basin.

9

Why are we called the blue planet?

Because earth is made up of 71% water, the water makes us look blue from space.

10

Describe earth and its features.

Earth is sphere shape rocky planet. Some places are are huge rocks like mountains and some areas are hollowed and covered with water.
There is also the layer of air that surrounds earth called the earths atmosphere.

11

What's the difference between a continent and a island?

7 large pieces of earths land surface is continents.
A island is a small piece of land surrounded by sea.

12

What is the difference between seas, oceans and lakes.

Oceans are large areas of earths salt water.
Seas are small areas of earths salt water.
Lakes are large areas of water that has land all around it.

13

Name the major oceans

Atlantic ocean
Pacific Ocean
Indian Ocean

14

Name the continent

Africa
Asia
Europe
North America
South America
Australia
Antarctica

15

What is the thin layer of air that surrounds the earth called and why is it useful to us?

The earths atmosphere.
It protects us from the Suns dangerous rays and helps keep earth warm.

16

There are many places on earth that's covered in large areas of water. What is this called?

The earths water surfaces.

17

Describe a habitat.

A habitat is a special place where people, plants and animals live. It is a place where they get everything they need.

18

How wide is the earths atmosphere and what is it made of?

It's 600km above earth an is made up of gases we need to breather.

19

What is the difference between a planet and a star?

A planet is A large object that moves around the sun.
A star is object in space that gives off its own light.

20

Is space empty?

No it has stars, planets, gases and dust.

21

Why do we not see the sun at night?

Because our half of the earth is facing away from the sun.

22

What is the nearest object to earth in space?

The moon

23

What is the nearest star to earth?

The sun

24

Why is the moon shining at night?

It's the reflection of the sun.

25

How do we know the earth is not flat?

Photographs taken from space prove to us that the earth is not flat.