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Humans have a heart.
Which organ pumps blood?
Heart
The Earth has forests.
What areas contain many trees?
Forests
A phone has a screen.
What does a phone have to display images?
A screen
The color of clouds can be gray.
What color can clouds be?
Gray
Birds build nests.
What do birds build?
Nests
The Earth has valleys.
What low landforms exist on Earth?
Valleys
A chair has legs.
What supports a chair?
Legs
The Sun is a source of light.
What is a natural light source?
The Sun
Ice is cold.
Is ice hot or cold?
Cold
A door can lock.
What can a door do for security?
Lock
The Earth has rain and snow.
What types of precipitation exist?
Rain and snow
The Moon reflects sunlight.
Why does the Moon look bright?
Reflected sunlight
A backpack has straps.
What does a backpack have to wear it?
Straps
The color of wood is brown.
What color is wood?
Brown
A road connects places.
What does a road do?
Connects places
The Sun is very hot.
Is the Sun very hot?
Yes
Humans have hair.
What grows on the human head?
Hair
The Earth has islands.
What land is surrounded by water?
Islands
A book can be read.
What can you do with a book?
Read it
The Moon has phases like full and new.
What changes in the Moon over time?
Its phase
Water flows downhill.
Which direction does water flow?
Downhill
The Earth spins on its axis.
What does Earth spin on?
Its axis
A computer has a keyboard.
What input device does a computer have?
Keyboard
The color of bananas is yellow.
What color are bananas?
Yellow
A house has a roof.
What covers the top of a house?
Roof
The Sun helps plants grow.
What helps plants grow?
The Sun
Humans have two ears.
How many ears do humans have?
Two
The Earth has plains.
What flat landforms exist on Earth?
Plains
A pen can run out of ink.
What can a pen run out of?
Ink
The Moon is rocky.
What is the Moon mostly made of?
Rock
The Sun rises in the morning.
When does the Sun rise?
Morning
A clock can hang on a wall.
Where can a clock hang?
On a wall
The Earth has volcanoes.
What landforms erupt lava?
Volcanoes
The color of apples can be green.
What color can apples be?
Green
A table is used to place objects.
What is a table used for?
Placing objects
The Moon causes tides.
What causes ocean tides?
The Moon
Humans have skin.
What covers the human body?
Skin
The Sun is round.
What shape is the Sun?
Round
A bag can carry items.
What is a bag used for?
Carrying items
The Earth has rivers.
What natural flowing water exists on Earth?
Rivers
The Earth has a diameter of about 12,700 kilometers.
What is the approximate diameter of Earth?
About 12,700 km
The Sun is older than the Earth.
Which is older, the Sun or Earth?
The Sun
Humans are warm-blooded animals.
Are humans warm-blooded or cold-blooded?
Warm-blooded
The Earth has a northern and southern hemisphere.
How many hemispheres does Earth have?
Two
Water boils at 100 degrees Celsius.
At what temperature does water boil?
100°C
The Moon takes about a month to orbit Earth.
How long does the Moon take to orbit Earth?
About one month
The Sun emits light in all directions.
How does the Sun emit light?
In all directions
Humans have fingernails.
What grows at the ends of fingers?
Fingernails
The Earth has polar ice caps.
Where is most of Earth's ice located?
At the poles
A thermometer measures temperature.
What does a thermometer measure?
Temperature
The Sun is much hotter than Earth.
Which is hotter, the Sun or Earth?
The Sun
The Earth has a crust, mantle, and core.
What is the outer layer of Earth called?
The crust
Humans have eyebrows.
What is above the eyes?
Eyebrows
The Moon always shows the same face to Earth.
Does the Moon show different sides to Earth?
No
The Earth has fresh water and salt water.
What type of water is found in oceans?
Salt water
The Sun will eventually run out of fuel.
Will the Sun last forever?
No
Humans blink their eyes.
What do humans do to keep eyes moist?
Blink
The Earth has a day and night cycle.
What causes day and night?
Earth’s rotation
The Moon has weaker gravity than Earth.
Where is gravity weaker, Earth or Moon?
Moon
A scale is used to measure weight.
What does a scale measure?
Weight
The Sun is about 150 million kilometers from Earth.
How far is the Sun from Earth?
About 150 million km
Humans have a spine.
What runs down the human back?
Spine
The Earth tilts on its axis.
What causes seasons on Earth?
Earth’s tilt
The Moon has no liquid water on its surface.
Is there liquid water on the Moon’s surface?
No
The Sun creates shadows.
What causes shadows during the day?
The Sun
Humans have two shoulders.
How many shoulders do humans have?
Two
The Earth has tectonic plates.
What moves to cause earthquakes?
Tectonic plates
The Moon is visible from Earth.
Can people see the Moon from Earth?
Yes
A calendar shows dates.
What does a calendar show?
Dates
The Sun produces solar radiation.
What kind of energy comes from the Sun?
Solar energy
Humans have eyelids.
What covers the eyes when sleeping?
Eyelids
The Earth has more water than land.
Does Earth have more land or water?
Water
The Moon has a rocky surface.
What type of surface does the Moon have?
Rocky
The Sun’s light takes time to reach Earth.
Does sunlight reach Earth instantly?
No
Humans have ribs.
What protects the heart and lungs?
Ribs
The Earth has an equator.
What imaginary line divides Earth in half?
The equator
The Moon has mountains.
Does the Moon have mountains?
Yes
A compass points north.
What direction does a compass point?
North
The Sun is spherical.
What shape is the Sun?
Sphere
Humans sweat to cool down.
Why do humans sweat?
To cool down
The Earth has changing weather.
Does Earth’s weather stay the same?
No
The Moon reflects sunlight to Earth.
Why can we see the Moon at night?
Reflected sunlight
The Sun causes evaporation.
What causes water to evaporate?
The Sun
Humans have knees.
What joint bends the leg?
Knee
The Earth has lakes.
What inland bodies of water exist on Earth?
Lakes
The Moon has a near side and far side.
How many sides of the Moon are there?
Two
The Sun is the main energy source for Earth.
What is Earth’s main energy source?
The Sun
Humans have fingernails and toenails.
What grows on toes?
Toenails
The Earth has natural resources.
What useful materials come from Earth?
Natural resources
The Moon’s gravity affects Earth.
What does the Moon affect on Earth?
Tides