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WorksheetsSpace-Gravity, Fusion and Stars
Total questions: 19
Worksheet time: 10mins
The spectrum analysis of the light from stars reveals absorption lines which can tell us the star's what?
Brightness observation
Temperature measurement
Mass estimation
Chemical Composition
How did smaller planets form into larger ones in the early solar system?
Rapid cooling and expansion
Spontaneous creation
Collisions over millions of years
Chemical reactions in space
Which forces must be overcome for nuclear fusion to occur?
Strong repulsive forces between protons
Magnetic forces
Gravitational forces
Nuclear decay forces
What measure indicates how much energy a star emits over time?
Magnitude
Mass
Temperature
Luminosity
Which diagram displays the relationship between stars' temperature and brightness?
Hertzsprung-Russell diagram
Periodic table
Atomic model
Electromagnetic spectrum
What describes gravity between two objects?
No force between distant matter
Neutral force between all matter
Repulsive force between all matter
Attractive force between all matter
What force allows planets to form from pebbles in a gas disk?
Magnetism
Gravity
Electricity
Nuclear force
Why can Jupiter and Saturn not undergo nuclear fusion like the Sun?
They are too close to the Sun.
They have too much helium.
They lack sufficient temperature.
They do not have enough mass.
What are the primary elements that make up the Sun?
Iron and nickel
Carbon and oxygen
Oxygen and nitrogen
Hydrogen and helium
What process happens in the Sun where hydrogen atoms combine to form helium?
Photosynthesis
Combustion
Nuclear fission
Nuclear fusion
What role do protons play in an atom?
Bond with other atoms
Determine the atom's identity
Store energy
Stabilize the atom
What does a nucleus mainly consist of?
Electrons
Alpha particles
Protons and neutrons
Photons
What type of charge do electrons have?
Neutral
Positive
Atomic
Negative
What is one real-world example of gravity acting on celestial bodies?
Earth orbiting the Sun
Sound waves traveling
Magnetic fields aligning
Light refracting in water
Which large-scale systems are primarily held together by gravitational interactions?
Chemical bonds
Electromagnetic fields
Atoms and molecules
Galaxies and solar systems
As the distance between two objects increases, what happens to the gravitational force?
It decreases
It increases
It remains the same
It becomes zero
What happens to the strength of gravitational force when the mass of objects increases?
It increases
It decreases
It remains constant
It becomes zero
An Electron is a subatomic particle. What charge does the electron have?
negatively charged
positively charged
neutral
Where are protons located in the atom?
downtown
nucleus
electron cloud
office
