3.3 Movement in Space

Which of these forces acts on the Earth as it orbits the Sun?

• Gravity and Air Resistance

• Air resistance only

• Gravity only

• Gravity, Air Resistance and Friction

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The actual orbit of Uranus was different to the calculations. Which word best describes these calculations?

• Predictions

• Measurement

• Observations

• Conclusions

The planet was seen to move further away from the Sun at regular times. These results were recorded.

Which word best describes these results?

• Observations

• Predictions

• Conclusions

• Secondary Information

Scientist thought that another source of gravity was pulling Uranus further from the Sun. Which word best describes this statement?

• Observation

• Conclusion

• Measurement

• Secondary Information

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following planets has fastest orbital speed?

• Earth
• Mars
• Jupiter
• Mercury

Tags

NGSS.MS-ESS1-2

A satellite travels in constant speed without engines around the planet because ______.

• the satellite has no mass.

• the satellite has no energy/fuel.

• there is no air resistance.

• the satellite is weightless.

Tags

NGSS.MS-PS2-4

What is the force that acts to slow spacecraft in the air around Earth, but does not act on the spacecraft in space?

• gravity

• air resistance

• weight

• pull

Which of the following is the orbital speed of planet Earth?

• 30 km/s
• 20 km/s
• 40 km/s
• 50 km/s

Tags

NGSS.MS-PS3-1

The Sun's gravity is _ times stronger than of the Earth.

• 24

• 27

• 50

• 98

Which among the planets has the lowest orbital speed?

• Mercury
• Venus
• Neptune
• Earth

Tags

NGSS.MS-ESS1-2