Friction and Gravity

Gravity is a ______ force.

• noncontact

• contact

• contactless

• visible

Gravity depends on 2 things. Choose the correct relationship between mass and gravity.

• More Mass = More Gravity

  More Distance = Less Gravity

• More Mass = Less Gravity

  More Distance = More Gravity

• More Mass = More Distance

  More Distance = More Gravity

• More Mass = More Force

  More Distance = Less Mass

Choosw the best descriptionof this picture in relation to gravity.

• The Sun’s gravitational pull keeps all planets in the solar system orbiting the Jupitet.

• The Sun’s gravitational pull keeps all planets in the universe orbiting the Sun.

• The Earth’s gravitational pull keeps all planets in the solar system orbiting the Sun

• The Sun’s gravitational pull keeps all planets in the solar system orbiting the Sun.

The gravitational pull of the _____make the tides rise and fall every day on Earth.

• Sun

• Earth

• Moon

• Satellite

The illustration shows a feather and a ball that are falling. Which will likely take time before touching the ground?

• The ball is the last to touch the ground because of air resistance.

• The feather is the last to touch the ground because of gravity.

• The feather is the last to touch the ground because of air resistance.

• The ball is the last to touch the ground because of air resistance.

What is air resistance?

• Air resistance is a force working in the opposite direction to an object moving through the air causing it to increase its speed.

• Air resistance is a force working in the opposite direction to an object moving through the water causing it to slow down.

• Air resistance is a force working in the same direction to an object moving through the air causing it to slow down.

• Air resistance is a force working in the opposite direction to an object moving through the air causing it to slow down.

What force helps this guy in a parachute to safely land on the ground?

• Gravity

• Fluid Friction

• Force resistance

• Energy

Which of the following correlation correctly describe the picture?

• Smooth surface = less friction = more speed

• Rough surface = less friction = more speed

• Smooth surface = more friction = more speed

• Smooth surface = less friction = less speed

What should be done if you are walking on a surface with less friction?

• Walk faster

• Run

• Walk slowly

• Roll on the floor

Friction is _____ force.

• contact

• noncontact

• visible

• contract