GRADE 7 STARS AND SPACE

Rocket technology originated in

• the United States
• China
• Germany
• Russia

The reaction force that propels a rocket forward is called

• Gravity
• Inertia
• Velocity
• Thrust

During World War II, rockets were used to

• Send astronauts to the moon
• Launch spy satellites into space
• Carry explosives
• All of the above

The main advantage of multistage rockets is that

• the total weight of the rocket is reduced as the rocket rises
• the entire rocket goes into space
• they are easy to design
• they are small

The first human in space was

• Laika Sputnik
• Alan Shepard
• John Glenn
• Yuri Gagarin

The American program to land people on the moon was called

• Mercury
• Freedom
• Apollo
• Eagle

Objects in space experience extreme temperatures because

• space is full of matter
• micro-gravity affects temperatures
• there are no shadows in space
• space is a vacuum

Astronauts in orbit feel weightless because

• there is no gravity in space
• they have no mass in space
• they have negative weight in space
• they are falling through space around Earth

A range of colors formed when white light passes through a prism is called a

• lens
• spectrum
• ray
• photograph

Both reflecting and refracting telescopes are designed to

• gather and focus visible light
• separate visible light
• work better with wavelength radiation