G5 - The role of Gravity

Mariam is standing on the ground located at the North Pole. Hessa is standing on the ground located at the South Pole. Explain how both can stand with their feet on the ground.

• Gravity pulls things down and down means toward the center of Earth.

• Gravity will make Hessa fall from earth

• Mariam has a higher weight than Hessa

Fill in the blanks using the available answer choices

Things we drop fall to the ground because ------------ pulls them down

• Density

• Gravity

• Four Seasons

Which explains how gravity works to assist the flight of an airplane?

• It pushes up on the wings of the airplane to create lift.

• It helps to propel the plane forward as its speed increases.

• It pushes the airplane from all directions to help it stay in the air.

• It pulls the airplane downward when the pilot slows the engine's speed.

In science class, Moza learned that he weighs 90 lb on Earth and 15 lb on the Moon. Explain why there is a difference in Moza’s weight in the two different locations.

• The Moon has higher mass than Earth so its gravitational pull is much more than Earth’s. Because Moon’s gravity will pull her down strongly, Moza would weigh more on the Moon than she does on Earth

• The Moon has less mass than Earth so its gravitational pull is not as strong as Earth’s. Because Moon’s gravity would not pull her down as strongly, Moza would weigh less on the Moon than he does on Earth

• Moza would weigh more on the Moon than he does on Earth beacuse of the the sun

What force makes an apple fall to the ground?

• gravity

• Air Resistance

• Size

• Weight

If you threw a ball up on the Moon, it would go up 6 times higher than on Earth. Explain how this is possible.

• The Moon has more mass so its force of gravity is weaker than Earth’s.

• The Moon has less mass so its force of gravity is weaker than Earth’s. With less gravity pulling it down toward the Moon’s center, the ball could travel farther.

• Because of the sun gravity force

What is gravity?

• The force that pulls objects together

• The force that pushes objects apart

• The force that pulls objects to the center of earth

The amount of matter in an object is .........

• Force

• Weight

• pressure

• Mass

Fill in the blanks using the available answer choices.

Earth's water levels----------- on the side of Earth facing the moon.

• Raise

• Fall