Unit 1 Review

What is a hypothesis?

• A drawn conclusion
• An educated guess
• Gathered data
• A noneducated guess

What is the first step of the scientific method?

• Form a hypothesis
• Design an experiment
• Define a problem
• Draw conclusions

An independent variable is.....

• What YOU change in an experiment
• What depends on what changes
• The constants in the experiment
• The best way the solve the problem

How did our solar system form?

• An asteroid belt collided with the sun
• A cloud of dust and gas spontaneously exploded
• Dust and gas spun rapidly into our solar system
• A supernova sent energy

Which of the following is NOT one of Kepler's laws?

• The orbit of every planet is an ellipse with the sun at one focus.
• The square of the time taken for a planet to complete one orbit is proportional to the cube of its mean distance from the Sun.
• Every planet in the solar system rotates in a clockwise motion
• A line joining a planet and the sun sweeps out equal areas during equal intervals of time.

The motion of precession is similar to what?

• The way a football moves when thrown
• The wobbling motion of a spinning top
• The motion of a pendulum
• When a wheel spins on an axle

What does nutation lead to?

• Milder seasons
• More precipitation
• Less precipitation
• Harsher seasons

Barycenter is referred to as.....

• Midpoint
• Center of masses
• Equality
• Unequal masses

What causes the equatorial bulge around the Earth?

• The Coriolis effect

• The tides

• Centrifugal force from rotating about an axis

• The gravitational pull from mercury and venus

Which of the following is an example of the law of inertia?

• An asteroid flying out into space
• Darts being thrown and stopping at their target
• Grass being cut
• A swimmer doing laps in a pool