Newton's Laws
State Newton's first law of motion.
An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an unbalanced force.
What materials are commonly used to create electromagnets?
Iron core(nail), wire, battery
What are the two types of mechanical waves?
Transverse and Longitudinal
What are the two most abundant elements in our universe?
Hydrogen and Helium
What affects Earth's tides the most?
The moon
Give an example of balanced and unbalanced forces.
Balanced: a triple beam balance with 2 objects of the same mass being weighed.
Unbalanced: A toddler trying to tug on one end of a rope with a woman tugging on the other side
I convert mechanical energy into electrical energy, what am I?
Electric Generator
Can you describe what compressions and rarefactions are?
Compressions- close together
Rarefactions- far apart
Where do most stars spend their entire lives?
Main sequence stage
Which two moon phases are associated with a Spring tide?
Full and New moon
What is Newton's second law of motion?
Force=Mass X Acceleration
I convert electric energy into mechanical energy, what am I?
Electric Motor
What is Constructive Interference?
When two waves align to increase loudness of sound
What does fusion mean?
The coming together of molecules.
What two moon phases are associated with a Neap tide?
1st quarter and 3rd quarter
How does mass affect the acceleration of an object?
The more the mass the less the acceleration unless the force increases.
What is the difference between a permanent magnet and a electromagnet
A permanent magnet is a magnet 100% of the time and an Electromagnet can be turned on and off.
Can you name 3 wave interactions?
-Transmission
-Absorption
-Reflection
-Refraction
-Diffraction
I measure the composition of stars to see which elements are present within them, what am I?
Spectroscope
Explain Red Shift versus Blue Shift
Red shift- galaxies moving away from Earth
Blue shift- galaxies moving towards Earth
What is the force(N) of a plane traveling 200mph that weighs 40tons?
8,000N
What factors can make an electromagnet stronger? (3 factors)
1.Increasing the coils/wraps around the iron core.
2.Cooling techniques
3.Adding an extra battery
Put the electromagnetic spectrum in order from longest wavelength to shortest wavelength.
Radio waves, microwaves, infrared rays, visible light, ultraviolet rays, x-rays, gamma rays.
Can you put the life cycle of a star in order- both paths?
Stellar nebula, Protostar, Main sequence star, Red giant, Planetary nebula, white dwarf, black dwarf
Stellar nebula, Protostar, Main sequence star, Red supergiant, supernova, black hole, neutron star
What is the main piece of evidence supporting the Big Bang theory called?
Cosmic Microwave Background Radiation (CMBR)