Review science

What is gravity?

• A push or pull on an object

• The force of attraction (pull) between two objects

• The tendency to keep moving in a straight line

• Any object that orbits another object

Why would a person weigh more on Jupiter than on the Earth?

• Jupiter has more mass, and therefore more gravity

• Jupiter has less mass, and therefore more gravity

• Jupiter has more mass, and therefore less gravity

• Jupiter has less mass, and therefore less gravity

Which is the correct order of our planets in solar system?

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

• Mars, Venus, Earth, Mercury, Jupiter, Saturn, Uranus, Neptune

• Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus, Mercury

• Mercury, Venus, Earth, Mars, Neptune, Saturn, Jupiter, Uranus

What happens during a solar eclipse?

• the Moon passes between Earth and the Sun

• Earth passes between the Moon and the Sun

• Asteroids pass between Earth and the Sun

• the Sun passes between Earth and Mars

Which happen because of the Moon's revolution around Earth.

• Tides

• Eclipses

• Phases

• Waves

Which is the reason for seasons on the earth?

• The revolution of Earth around the Sun

• The rotation of Earth around its axis

• The revolution of Moon around Earth

What is a force?

• it is anything which is capable of changing the state of

  motion or rest of a body, or deforming it.

• It is anything that occupies a space and has mass and volume.

• It is a device that is used to measure forces and to weigh bodies.

• is a change of position of a body over time with respect to a reference system which is considered fixed.

What is a force that works AGAINST MOTION?

• Motion

• Gravity

• Force

• Friction

What are balanced forces?

• Forces in the same direction

• Forces of the same size

• forces of the same size in opposite directions

It is not the difference in gravity that causes objects to fall at different speeds, it’s the difference in the amount of__________________.

• Weight

• Mass

• Air resistance