Earth Habitable Zone
Why is Earth in the "habitable zone"?
A) It's the biggest planet
B) It's too close to the Sun
C) It's the right temperature for liquid water
D) It has many moons
C) It's the right temperature for liquid water
What happens when a big star dies?
A) It gets colder
B) It turns into a comet
C) It explodes in a supernova
D) It becomes a moon
C) It explodes in a supernova
What holds the planets in orbit around the Sun?
A) Wind
B) Sunlight
C) Gravity
D) Ice
C) Gravity
What is an exoplanet?
A) A moon of Earth
B) A planet outside our solar system
C) A star
D) A type of comet
B) A planet outside our solar system
Why do we stay on the ground on Earth?
A) The Sun pulls us
B) Earth’s gravity pulls us down
C) The Moon helps us
D) We are magnetic
B) Earth’s gravity pulls us down
Which planet is also in the Sun’s habitable zone?
A) Venus
B) Mars
C) Jupiter
D) Mercury
B) Mars
Which of these stars is the hottest?
A) Red star
B) Yellow star
C) Blue star
D) White dwarf
C) Blue star
What causes climate change?
A) Too many clouds
B) Cars and factories release greenhouse gases
C) Volcanoes stop working
D) More rainstorms
B) Cars and factories release greenhouse gases
How do scientists find exoplanets?
A) By flying to them
B) By watching them move in front of stars
C) By using submarines
D) By building them
B) By watching them move in front of stars
What does Earth’s atmosphere do?
A) Makes stars shine
B) Keeps out sunlight
C) Protects us and holds air to breathe
D) Gives us gravity
C) Protects us and holds air to breathe
What does the "habitable zone" mean?
A) A place where it rains
B) A place with only gas
C) A place where life can exist
D) A place with lots of stars
C) A place where life can exist
Which planet is closest to the Sun?
A) Venus
B) Mars
C) Mercury
D) Earth
C) Mercury
Which gas traps heat in Earth’s atmosphere?
A) Oxygen
B) Carbon dioxide
C) Helium
D) Nitrogen
B) Carbon dioxide
Why are exoplanets interesting to scientists?
A) They can melt
B) They are always huge
C) Some might have life
D) They are close to the Moon
C) Some might have life
Which layer of Earth’s atmosphere helps block UV rays?
A) Troposphere
B) Mesosphere
C) Ozone layer
D) Crust
C) Ozone layer
What is the first stage of a star’s life?
A) White dwarf
B) Main sequence
C) Protostar
D) Supernova
Protostar
Which two planets are gas giants?
A) Earth and Mars
B) Jupiter and Saturn
C) Venus and Mercury
D) Neptune and Mars
B) Jupiter and Saturn
What is one effect of climate change?
A) More sunshine
B) Less gravity
C) Melting ice caps
D) More stars
C) Melting ice caps
What is gravity?
A) A force that pushes things away
B) A force that makes things float
C) A force that pulls things together
D) A kind of light
C) A force that pulls things together
What gas do we need to breathe?
A) Carbon dioxide
B) Hydrogen
C) Nitrogen
D) Oxygen
D) Oxygen
What kind of star is our Sun?
A) White dwarf
B) Main sequence
C) Neutron star
D) Super giant
B) Main sequence
Why is Pluto no longer called a major planet?
A) It's too hot
B) It has no gravity
C) It is too small and doesn’t clear its orbit
D) It is made of gas
C) It is too small and doesn’t clear its orbit
How can we help stop climate change?
A) Burn more coal
B) Plant more trees
C) Use more plastic
D) Drive more cars
B) Plant more trees
Which planet has the most gravity?
A) Earth
B) Venus
C) Jupiter
D) Mars
C) Jupiter
What is the electromagnetic spectrum?
A) A list of star names
B) A way to measure planets
C) A range of light waves, including visible and invisible
D) A tool for measuring earthquakes
C) A range of light waves, including visible and invisible