Know It All Friday - 8th Science - 11/19/21

Models of the solar system with Earth at the center are called _____________________ models.

• geocentric

• heliocentric

• terrestrial

• none of the above

Which body has the greater effect on Earth's tides?

• Sun
• Saturn
• Moon 
• Venus

What type of tides would this arrangement of earth-moon-sun create?

• neap tide
• spring tide
• new moon tide
• full moon tide

The Moon has a greater influence on Earth tides than the Sun because...

• it is smaller than the Sun
• it revolves around the Earth
• it is closer to the Earth

Which law states that the acceleration of an object depends on the force exerted on it and its mass?

• 1st Law

• 2nd Law

• 3rd Law

Which law states that for every action there is an equal and opposite reaction?

• 1st Law

• 2nd Law

• 3rd Law

When there is an INCREASE in MASS of an object you will have a DECREASE in ______________.

• friction

• acceleration

• force

• gravity

Calculate the net force of the object in the image shown.

• 20N
• 35N
• 5N
• 25N

The forces represented by the arrows in the diagrams are applied to the four objects that are at rest on a table. Which object is most likely to remain in place?

• Object W
• Object X
• Object Y
• Object Z

As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know