Unit 1
Which scientific discovery commonly attributed to Newton did Hooke also claim to have played a major role in?
law of gravitation.
According to Newton, which of these will determine if and how an object will move?
whether a net force acts on the object.
A car is moving at a constant speed.
If the force generated by the car to push it forward is 8,000 N, what can be said about the force opposing the car’s motion?
It is exactly 8,000 N.
What is the research facility that exists in space and enables scientists to learn about the long-term effects of space travel?
International Space Station
Why is Venus the hottest planet?
Venus has a thick atmosphere that traps heat.
What is the main criticism Newton received for his work on gravitation?
People did not think forces could act at such large distances.
What type of force is friction?
contact force.
A carpenter strikes a nail with a hammer, pushing it into wood. The carpenter applies a force of 1,000 N on the nail.
How much force does the nail apply on the hammer?
exactly 1,000 N
How much of Dalton’s atomic model is still considered accurate?
How much of Dalton’s atomic model is still considered accurate?
Which planets can be referred to as the inner planets?
Mercury, Venus, Earth, Mars
Which discovery is Maxwell best known for?
relating electricity and magnetism.
Which statement defines friction?
a force that opposes motion.
An astronaut floating in space throws a wrench forward with the force of 10 N.
How much force does the wrench apply on the astronaut?
exactly 10 N
What was important about Galileo Galilei’s observations using his telescope?
His discoveries were used as evidence that the planets revolve around the Sun.
How does the average temperature of the inner and outer planets compare?
The inner planets are significantly warmer than the outer planets.
What can be said about the velocity of a car that slows down as it reaches a red light?
The velocity of the car is changing.
When a magnet is brought near a piece of iron and pulls it along a table without touching it, what type of force is making the iron move?
electromagnetism, which is a field force
Which statement describes what happens when a hammer strikes a nail?
The nail applies an equal and opposite force on the hammer.
What was an important contribution of Nicolaus Copernicus to space science?
He created a model of the universe with the Sun in the center, rather than the Earth.
Which of these are galaxies, stars, and planets all a part of?
the universe
If a ship moving forward has positive acceleration, what can be said about the velocity of the ship?
The velocity is increasing.
While someone is skateboarding, the wheels of the skateboard are in contact with the ground. The skateboarder _[blank 1]_ on the ground to move the skateboard forward, but if the skateboarder doesn’t, _[blank 2]_ causes the skateboard to slow down and eventually stop.
blank 1: pushes
blank 2: friction
How can a wave carry information?
The transmitter changes the form of the wave. The receiver then decodes the changes that have been made to the wave.
What was a major contribution of Galileo Galilei to the field of space science?
He discovered many of the moons of Jupiter, and he observed spots on the Sun and mountains on the Moon.
What does a planet’s orbital radius measure?
how far the planet is from the Sun