Question

1. why is it important to wear goggles during a science experiment?

a) they look professional
b) they keep chemicals out of your eyes.
c) they help you read.
d) they keep light out

1. which statement about metric conversions is true?

a) move the decimal right to make a unit smaller.
b) there are 10 millimeters in a centimeter.
c) the metric system is based on 12s.
d) 1 meter = 1000 centimeters.
part 2 - gravity and motion
gravity is a force that pulls objects toward each other. the mass of objects and the distance between them affect how strong gravity is. gravity is what keeps the planets in orbit around the sun and causes the moon to orbit earth. larger objects (like the sun) have a stronger gravitational pull. if two objects are farther apart, the force of gravity between them is weaker. satellites, velocity, inertia, and revolution are all related to how objects move in space.
key vocabulary:
gravity, force, mass, orbit, satellite, velocity, inertia, revolution, solar system, centripetal force
fill in the blank: fill in the blank with the correct words.

1. ____________ is the force that keeps planets in orbit around the sun.
2. the ____________ of an object affects how strong its gravitational pull is.
3. the path an object follows as it moves around another object is called its ____________.
4. if the distance between two planets increases, the force of gravity between them will ____________.
5. the spinning of a planet on its axis is called ____________.

word bank: gravity, mass, orbit, decrease, rotation
multiple choice questions: choose the correct answer from the choices for each question

1. which statement best describes gravity?

a) a force that pushes objects apart.
b) a force that pulls objects toward one another.

Explanation:

• For question 9, goggles are safety - gear in science experiments to protect eyes from chemicals.
• For question 10, in the metric system, 1 centimeter = 10 millimeters.
• For fill - in - the - blank questions:
• Gravity keeps planets in orbit around the Sun.
• Mass affects the strength of an object's gravitational pull.
• The path an object follows around another is its orbit.
• As the distance between two planets increases, the gravitational force decreases.
• The spinning of a planet on its axis is rotation.
• For question 16, gravity is a force that pulls objects toward one another.

Answer:

1. b) They keep chemicals out of your eyes.
2. b) There are 10 millimeters in a centimeter.
3. Gravity
4. mass
5. orbit
6. decrease
7. rotation
8. b) A force that pulls objects toward one another.