Know It All Friday - 8th Science - 10/1/21

A force that opposes motion

• Force
• Friction
• Gravity
• Magnetism

What pulls a ball back to earth?

• Gas
• Gravity
• Friction
• Molecules

Forces always act in equal and opposite pairs.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

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

• 20N
• 35N
• 5N
• 25N

Which direction will the object move?

• Right
• Left
• Up
• Down

As mass increases, what happens to gravitational force?

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

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

What will happen when these magnets are brought close together?

• They will attract each other.

• They will repel each other.

• They will stay the same.

How is Earth's magnetic field similar to that of a magnet?

• It's shaped like a horseshoe.
• It has north and south poles.
• It is made plastic.
• It is hundreds of miles long.

Where are the magnetic force the strongest in this picture?

• Location 1
• Location 2
• Location 3
• Location 4