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WorksheetsUnit 1 - Breakfast Cereals and Blackholes
Total questions: 12
Worksheet time: 6mins
The event horizon of a black hole represents:
The moment when the black hole formed.
The boundary beyond which nothing can escape.
The density limit of a black hole.
None of these
Objects that float at the interface between a liquid and a gas interact because of all of the following EXCEPT ___
Gravity
Buoyancy
Interfacial deformation
Speed of light
Number of protons in an uncharged atom = number of _________
Neutrinos
Electrons
Protons
Photons
What would change if our Sun was suddenly replaced by a black hole of the same mass?
Earth would be sucked into the black hole
The planets would no longer have the same orbit
Only the temperature on Earth would change
None of these
Water is a universal solvent because:
Solutes are not polar molecules
· Water has a neutral pH
Water is made up hydrogen and oxygen atoms
· Water is polar and can dissolve more substances than any other liquid
Capillary action is the result of which of
the following?
Adhesion
Cohesion
Physical changes
Plants
You are sitting on a train moving at 3 m/s, on a planet that is moving at a velocity of 450 m/s around its star, a star that is moving at 63,000 m/s around its galaxy, a galaxy that is moving at 1,000,000 m/s towards another galaxy. What is your velocity?
3 m/s
0 m/s
63,000 m/s
1,000,000 m/s
Infinitely dense points that make the core of black holes.
Accretion Disk
Event Horizon
Singularity
Worm Hole
AML, the disease Stephen Hawking was diagnosed with is also known as ____.
Bright’s disease
Gillian Barry Syndrome
Lou Gehrig’s disease
Huntington’s disease
The object thought to be a super massive black hole at the center of the Milky Way galaxy is known as:
Sagittarius A*
Alpha Centauri
Eta Carinae
None of these
An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom have?
30
26
56
82
_____ are theoretical connections between distant points in space-time.
Wormholes
Blackholes
Gravitational Waves
Gravity Tunnels
